Inorganic Chemistry Communications (v.9, #10)

Contents List (iii-viii).

Dinuclear lanthanide(III) complexes containing β-diketonate terminal ligands bridged by 2,2′-bipyrimidine by Deepika D’Cunha; Daniel Collins; Gregory Richards; Gilford S. Vincent; Shawn Swavey (979-981).
A one-pot synthetic procedure has been used to make 16 new lanthanide complexes in high purity. Monometallic and bimetallic complexes are formed using the same synthetic conditions based on the size of the metal and the type of diketone terminal ligand.Reactions of lanthanide(III) (LnIII) salts with the polyazine bridging ligand 2,2′-bipyrimidine (bpm) and β-diketonate terminal ligands yield 16 new monometallic and bimetallic complexes of the form Ln(tl)3bpm and [Ln(tl)3]2bpm respectively, where tl = terminal ligand. Formation of the dinuclear complex is governed by the size of the lanthanide metal and the type of terminal ligand. The smallest LnIII metals form dinuclear complexes when the terminal ligand consists of an aromatic and a fluoro group. The largest LnIII metals (Pr and Nd) form only mononuclear complexes with the bpm bridging ligands regardless of the terminal ligand. The electronic spectra of the complexes is dominated by the π−π transitions associated with the terminal ligand and the emission spectra are due to 4f–4f lanthanide transitions.
Keywords: Bridging; Lanthanide; Bipyrimidine; Homodinuclear;

1,2-W2Cp2(NMe2)4 reacts with aliphatic alcohols MeOH, EtOH, and PrOH to form Cp2WH2 and W(OR)6. Reactions with excess CF3CH2OH gives a mixture of two pentanesoluble, crystalline products formulated as 1,1-W25-Cp)(η3-C5H7)W2(OCH2CF3)6and complex salt W(OCH2CF2)2][H2NMe2] [Cp2W(H) x (OCH2CF3)] where x  = 1 or 2.1,2-Cp2W2(NMe2)4 undergoes WW bond scission in the presence of excess aliphatic alcohols ROH where R = Me, Et, Pr n giving yellow, crystalline Cp2WH2 and presumably W(OR)6. In reactions with excess CF3CH2OH, two crystalline products are obtained from the pentane wash of the crude product. The first product is formulated as 1,1-W25-Cp)(η3-C5H7)(μ-OCH2CF3)2(OCH2CF3)4, (W–W, 2.705(1) Å avg. for two independent molecules) wherein six equivalents of CF3CH2OH have reacted with the amide precursor. The unusual η3-C5H7 ligand present in this compound arises from the transfer of two protons to one of the Cp rings. The second product is formulated as the complex salt [W(OCH2CF3)6] [H2NMe2][Cp2W(H) x (OCH2CF3)] wherein a H2NMe2 cation bridges the neutral W(OR)6 moiety and the Cp2W(H) x (OCH2CF3) (x  = 1 or 2) anion through hydrogen bonding. The formation of the alcoholysis products suggests the importance of oxidative addition in the mechanism of alcoholysis of ditungsten dimethylamides.
Keywords: Ditungsten; Alcoholysis; Dimethylamide; Hydride transfer; W–W bond cleavage;

This paper presents a good example of a new approach for molecules to form a noncentrosymmetric crystal and align favorably for nonlinear optical (NLO) property, and reports the synthesis, crystal structure and NLO effect of a new screw shaped coordination compound.This paper presents the synthesis and crystal structure of a new screw shaped square–pyramidal coordination compound, Zn(OCPT)(acac)2(OCPT is o-chlorophenylthiourea). In the molecule, the “tail” length is almost equal to the width of the “head”. The compound crystallizes in a noncentrosymmetric structure. The molecules are arranged in almost parallel direction.The compound showed the powder SHG (second harmonic generation) effect of about 1.5 times as large as that of KDP.
Keywords: Coordination compound; Crystal structure; Nonlinear optics; Crystal engineering;

The photochemical reduction of nitrite to nitrogen monooxide was catalyzed by a copper complex, which is a model for the active site of copper-containing nitrite reductase, with a visible light irradiation system containing a [Ru(bpy)3]Cl2 photosensitizer in H2O under acidic conditions at 30 °C.The photochemical reduction of nitrite ( NO 2 - ) to nitrogen monooxide (NO) was catalyzed by a copper complex containing a tridentate aromatic amine compound (bis(6-methyl-2-pyridylmethyl)amine), which is a model for the active site of copper-containing nitrite reductase, with a visible light irradiation system containing a [Ru(bpy)3]Cl2 photosensitizer in H2O under acidic conditions at 30 °C. The rate-limiting step of the reaction was found to be the generation step of the excited Ru complex or the intermolecular electron transfer between Cu and Ru complexes.
Keywords: Copper complex; Nitrite reductase; Photoreduction; Ruthenium; Nitrogen monoxide;

Progress towards the preparation of a Ru(II)-tetrathioether based molecular square is described with the preparation of the components of one corner and one side and two corners and one side. Two Ru 12S4 moieties are linked by a bridging 4,4′-bipyridine ligand.Reaction of the complex cis-[Ru(12S4)(dmso)Cl]+ (12S4 = 1,4,7,10-tetrathiacyclododecane) and 4,4′-bipyridine (bpy) produces the mononuclear complex [Ru(12S4)(bpy)Cl]+ (1) when a 1:1 stoichiometry is employed while a 2:1 stoichiometry (Ru/bpy) produces the bpy bridged binuclear complex, [{Ru(12S4)Cl}2-μ-(bpy)]2+ (2). The crystal structures of both complexes show the Ru(II) in a distorted octahedral environment of a cis arrangement formed by the four S donors from the 12S4, a bpy N donor, and a chloride. The 12S4 ligand adopts the same non-C2 symmetric conformation at all metal centers in both structures. The bridging of the 4,4′-bpy ligand to both Ru(II) centers in (2) is indicated by the presence of two resonances in its 1H NMR spectrum and three in its 13C NMR spectrum. The lower symmetry of the mononuclear complex (1) produces more complicated NMR spectra. Cyclic voltammetry for both complexes in CH3CN show a reversible one electron oxidation wave with E 1/2 near +670 mV vs. Fc/Fc+ which is assigned as a Ru(II)/Ru(III) couple.

N,N,N′,N′-Tetraethylurea reacts with carbonic acid dichloride (phosgene) to give N, N, N′, N′-tetraethylchloroformamidinium chloride in quantitative yield. The crystal structure of the title compound reveals the presence of nearly linear C–Cl–Cl fragments [Cl(1)–Cl(2) 3.152(1) Å, C(1)–Cl(1)–Cl(2) 175.7(1)°] indicative of hypervalent (n-σ∗)Cl–Cl contacts. N,N,N′,N′-Tetraethylurea reacts with carbonic acid dichloride (phosgene) to give N,N,N′,N′-tetraethylchloroformamidinium chloride (2) in quantitative yield. The crystal structure of 2 reveals the presence of nearly linear C–Cl–Cl fragments [Cl(1)–Cl(2) 3.152(1) Å, C(1)–Cl(1)–Cl(2) 175.7(1)°] indicative of hypervalent (n–σ∗)Cl–Cl contacts.
Keywords: Vilsmeier salts; Carbenes; Chlorine adduct; Hypervalency;

Hydrothermal synthesis, crystal structures and characterizations of a novel 3D metal phosphonate: Mg0.5Cd[O3PCH(OH)CO2] by Zhen-Gang Sun; Lian-Yi Cui; Zhong-Min Liu; Lei Meng; Hui Chen; Da-Peng Dong; Lan-Cui Zhang; Zai-Ming Zhu; Wan-Sheng You (999-1001).
A novel cadmium and magnesium phosphonate compound Mg0.5Cd[O3PCH(OH)CO2] (1) has been synthesized by hydrothermal reaction at 110 °C. The structure of 1 comprises CdO6 octahedra and MgO6 octahedra connected by [O3PCH(OH)CO2]3− to form 3D framework with one-dimensional channel system in the a-axis direction.A novel cadmium and magnesium phosphonate compound Mg0.5Cd[O3PCH(OH)CO2] (1) has been synthesized by hydrothermal reaction at 110 °C and characterized by single-crystal X-ray diffraction as well as with infrared spectroscopy, elemental analysis and thermogravimetric analysis. The structure of 1 comprises CdO6 octahedra and MgO6 octahedra connected by [O3PCH(OH)CO2]3− to form 3D framework with one-dimensional channel system in the a-axis direction.
Keywords: Metal phosphonates; Crystal structure; Hydrothermal synthesis; Cadmium; Magnesium;

A dinuclear copper salicylate [Cu2(Sal)(HSal)(2,2′-bpy)2](ClO4) (1) (H2Sal = salicylic acid) has been synthesized and characterized with analytical and spectroscopic studies. The molecular structure of 1 shows the presence of partially deprotonated salicylate ligands in the complex.A dinuclear copper salicylate [Cu2(HSal)(Sal)(2,2′-bpy)2](ClO4) (1) (H2Sal = salicylic acid) has been synthesized and characterized with the aid of elemental analysis and infrared, ultraviolet and fluorescence spectroscopic studies. The molecular structure of 1, determined by single-crystal X-ray diffraction studies, shows the presence of incompletely deprotonated salicylate ligands in the complex. Hydrogen bonding interactions and π–π aromatic stacking lead to the formation of 2D polymeric structure in the solid state.
Keywords: Copper salicylate; Hydrogen bonding; Crystal structure;

A three-dimensional cyanide-bridged bimetallic assembly [NiII(tn)2]5[FeIII(CN)6]2[FeII(CN)6] (tn = 1,3-propanediamine) has been prepared and its crystal structure determined: space group P2(1)/n, a = 9.8536(5), b = 15.6670(7), c = 26.7670(12) Å, α  = 90, β  = 91.8130(10), γ  = 90° and Z  = 2. Magnetic studies show that the complex displays a metamagnetic behavior originating from ferromagnetic coupling and magnetic ordering at Tc = 9 K.A three-dimensional cyanide-bridged bimetallic assembly [NiII(tn)2]5[FeIII(CN)6]2[FeII(CN)6] (tn = 1,3-propanediamine) has been synthesized. The structure consists of cyanide bridged neutral NiII 5FeIII 2FeII units. Each hexacyanoferrate(II) ion connects six NiII ions using all six CN– groups and each hexacyanoferrate(III) ion coordinates with two NiII ions. Magnetic studies show that the complex displays a ferromagnetic coupling between Ni(II) and Fe(III).

Centrosymmetric heptacoordinated cadmium(II) dimer [Cd(bpfd)(μ-1,1N3)(N3)]2  · 3H2O (1) (bpfd =  N,N′-(bis(pyridin-2-yl)formylidene)ethane-1,2-diamine) has been synthesized and characterized by single-crystal X-ray diffraction.A novel end-on azido bridged centrosymmetric heptacoordinated cadmium(II) dimmer [Cd(bpfd)(μ-1,1N3)(N3)]2  · 3H2O (1) (bpfd =  N,N′-(bis(pyridin-2-yl)formylidene)ethane-1,2-diamine) has been synthesized and characterized by single-crystal X-ray diffraction. The results show the heteromeric hydrogen-bonded 2D supramolecule that can be exploited to assemble the [Cd(bpfd)(μ-1,1N3)(N3)]2 dimeric building blocks and water of crystallization.
Keywords: Cadmium(II); End-on azide; Schiff base; Hydrogen bond; 2D sheet;

Syntheses, structure and magnetic properties of oxamido-bridged trinuclear Cu–M–Cu macrocyclic complexes (M = Cu, Co and Mn) by Ming Yu; Rong-fang Li; Gong-feng Xu; Qing-lun Wang; You Song; Guang-ming Yang; Dai-zheng Liao (1015-1018).
We reported three new trinuclear macrocyclic complexes containing oxamido-bridge shown in scheme (M = Cu, Co, Mn). The magnetic properties have been investigated. The χ MT versus T plots for the three complexes exhibit antiferromagnetic coupled, with the best fit J  = −188.85, −25.64 and −14.26 cm−1, respectively.Three isomorphic oxamido-bridged trinuclear complexes of formulae [Cu(CuL(EtOH))2] · (EtOH)2(ClO4)2(H2O)0.5 (1), [Co(CuL(EtOH))2(EtOH)2] · (ClO4)2(H2O)0.5 (2), and [Mn(CuL(EtOH))2(EtOH)2] · (ClO4)2(H2O)0.5 (3) (H2L  = 2,3-dioxo-5,6:13,14-dichlorobenzo-7,12-diphenyl-1,4,8,11-tetraazacyclotetradeca-7,11-diene) have been synthesized and structurally characterized. The central ions of complexes 13 (Cu, Co, Mn) are all bridged by macrocyclic oxamido groups. The χ M and μ eff vs T plots in the 1.8–300 K range for the three complexes exhibit antiferromagnetic coupled (based on isotropy H ^ = - 2 J S ^ i · S ^ j ), with the best fit J  = −188.85, −25.64 and −14.26 cm−1, respectively. The values of magnetic exchange interactions through oxamido-bridge show: Cu–Cu > Cu–Co > Cu–Mn.
Keywords: Oxamido bridge; Trinuclear complex; Magnetic property; Macrocyclic complex; Exchange integral; Crystal structure;

A cationic phthalocyaninatozinc(II) complex was intercalated into layered inorganic compounds of titanium hydrogen phosphate, titanium sodium phosphate and titanium octyl phosphate, respectively. 1,3-Diphenylisobenzofuran was photooxidized in acetonitrile using the composites in irradiation by a visible light.The titled cationic phthalocyanine complex was intercalated into layered inorganic compounds, titanium hydrogen phosphate, titanium sodium phosphate and titanium octyl phosphate. 1,3-Diphenylisobenzofuran was photooxidized in acetonitrile using the composite of titanium sodium phosphate as a sensitizer in irradiation with a visible light.
Keywords: Intercalation; Photooxidation; Cationic phthalocyanine; Layered inorganic compound;

The reduction of CrCl3(thf)3 with zinc in the presence of diazadiene ligands in dichloromethane resulted in the formation of Cr(II) compounds (dad)CrCl2. The new complexes display a slightly distorted tetrahedral coordination sphereThe α-diimine ligands Ar―N=C(R)―C(R)=N―Ar (ai, bi, c) react with CrCl3(thf)3 1 in the presence of zinc to give new diamagnetic tetrahedral chromium (II) complexes supported by α-diimine ligands 2ai (i  = 1–2), 2bi (i  = 1–2) and 2c in good yields. All compounds were characterized by NMR and IR spectroscopy. The solid-state structure of 2b2, which crystallized in the Orthorhombic space group P212121 with unit cell parameters a  = 11.825(5) Å, b  = 12.034(4) Å and c  = 16.393(8) Å, was established by X-ray crystallography.
Keywords: Diazadiene ligands; Chemical reduction; Chromium (II) complexes;

A heterodimetallic platinum–cobalt carboxylate complex Pt IV Co 2 II ( μ , η 2 - OOCCMe 3 ) 4 ( OOCCMe 3 ) 2 ( OH ) 2 ( HOOCCMe 3 ) 4 : Synthesis and structure by Sergei E. Nefedov; Natalia Yu. Kozitsyna; Natalia V. Cherkashina; Georgy K. Fukin; Michael N. Vargaftik; Ilya I. Moiseev (1026-1028).
The first PtIV–CoII heterodimetallic complex Pt IV Co 2 II ( μ , η 2 - OOCCMe 3 ) 4 ( OOCCMe 3 ) 4 - ( H 2 O ) 2 ( HOOCCMe 3 ) 2 was synthesized starting from the platinum(II,III) acetate blue [Pt(OOCMe)2.5] n and Co(OOCMe)2  · 4H2O followed by acetate–pivalate ligand substitution and structurally characterized by X-ray diffraction.Reaction of the platinum(II,IV) acetate blue Pt(OOCMe)2.5 with Co(OOCMe)2  · 4H2O followed by acetate–pivalate ligand substitution gave the first PtIV–CoII heterodimetallic purely carboxylate complex Pt IV Co 2 II ( μ , η 2 - OOCCMe 3 ) 4 ( OOCCMe 3 ) 2 ( OH ) 2 ( HOOCCMe 3 ) 4 with the [Pt(OOCCMe3)4] structure-forming building block as established by single-crystal X-ray diffraction study.
Keywords: Platinum; Cobalt; Heterodimetallic complex; Pivalate-bridging complex; X-ray structure;

Cd7I12S · 3H2O: A novel 3-D inorganic open-framework with unusual heptanuclear quasi-supertetrahedra by Wen-Tong Chen; Guo-Cong Guo; Ming-Sheng Wang; Gang Xu; Jin-Shun Huang (1029-1032).
A novel compound Cd7I12S · 3H2O, possessing an acentric nature that allows it to be a potential NLO property, has been synthesized via hydrothermal reaction. The crystal structure is characteristic of a 3-D inorganic open-framework, containing unusual heptanuclear quasi-supertetrahedra. Optical absorption spectrum shows that the title compound is a semiconductor.A novel 3-D inorganic open-framework containing unusual heptanuclear quasi-supertetrahedra, Cd7I12S · 3H2O (1), was obtained by hydrothermal reaction and structurally characterized. Optical absorption spectrum reveals that the presence of an optical gap of 2.26 eV, indicating that compound 1 is a semiconductor.
Keywords: Chalcogenide; Cadmium; Halide; Inorganic open-framework; Semiconductor;

DNA-binding properties of flexible diamine bridged dinuclear ruthenium(II)-2,2′-bipyridine complexes by Yasuo Nakabayashi; Nobuaki Iwamoto; Hiroyuki Inada; Osamu Yamauchi (1033-1036).
A series of new flexible diamine bridged dinuclear ruthenium(II) complexes, [{RuCl(bpy)2}2(μ-BL)]2+ (bpy = 2,2′-bipyridine; BL = H2N(CH2) n NH2 (n  = 4 (bn), 8 (on), 12 (don))), selectively bound to guanine bases in CT-DNA. The site of ruthenation in plasmid pBR322 DNA derived from intrastranded cross-links between two deoxyguanosines by measuring the inhibition of the restriction enzyme Nhe I.A series of new flexible diamine bridged dinuclear ruthenium(II) complexes, [{RuCl(bpy)2}2(μ-BL)]2+ (bpy = 2,2′-bipyridine; BL = H2N(CH2) n NH2 (n  = 4 (bn), 8 (on), 12 (don))), were prepared ([Ru 2 -bn]2+, [Ru 2 -on]2+, [Ru 2 -don]2+). Time-course spectroscopic experiments revealed that these ruthenium(II) complexes selectively bind to guanine bases in CT-DNA and the degree of binding of [Ru 2-on]2+ or [Ru 2-don]2+ to CT-DNA relative to [Ru 2 -bn]2+ is high, which may be explained by the length of bridging ligand BL. The site of ruthenation in double-stranded plasmid pBR322 DNA derives from intrastranded cross-links between two deoxyguanosines by measuring the inhibition of the restriction enzyme Nhe I.
Keywords: Dinuclear ruthenium(II)-2,2′-bipyridine complexes; Diamine; Nucleotide; DNA; Electrophoresis;

The mononuclear copper(II) complex Cu(N-baa)2(phen) is synthesized by the reaction of Cu(OCH3)2 with N-benzoylanthranilic acid in the presence of 1,10-phenanthroline; the structure and catalase-like activity are investigated.The mononuclear copper(II) complex Cu(N-baa)2(phen) is synthesized by the reaction of Cu(OCH3)2 with N-benzoylanthranilic acid in the presence of 1,10-phenanthroline; the structure and catalase-like activity are investigated.
Keywords: Copper; Carboxylates; N-Benzoylanthranilic acid; Catalase-like activity;

Endocyclic disilver(I) complex and one-dimensional copper(I) iodide coordination polymer of a ditopic xylyl-bridged NO2S2 macrocycle by Hyun Jee Kim; Yongri Jin; Joobeom Seo; Ji-Eun Lee; Jai Young Lee; Shim Sung Lee (1040-1044).
A linked macrocyclic ligand L 1 was synthesized and its d 10 metal complexes (3 and 4) were prepared and structurally characterized. Reaction of L 1 with AgClO4 afforded a discrete endo-coordinated disilver(I) complex 3, [Ag2(L 1)](ClO4)2. Whereas, from the reaction of L 1 with CuI one-dimensional coordination polymer 4, [Cu4(L 1)I4] n was obtained. The NMR study suggests that the solid structures are also retained in solution.A linked macrocyclic ligand L 1 was synthesized and its d 10 metal complexes (3 and 4) were prepared and structurally characterized. Reaction of L 1 with AgClO4 afforded a discrete endo-coordinated disilver(I) complex 3, [Ag2(L 1)](ClO4)2. Whereas, from the reaction of L 1 with CuI one-dimensional coordination polymer 4, [Cu4(L 1)I4] n connected by twisted-ribbon type Cu4I4 motif was obtained. The NMR study suggests that the solid structures are also retained in solution.
Keywords: Linked macrocycle; Disilver(I) complex; CuI 1-D coordination polymer; Crystal structure; NMR;

Schematic description of the (3,4)-connected nets with the (8.102)2(4.84.10)2(42.82.102) topology.One 3D noninterpenetrating metallic-organic framework (MOF), namely M1.5(TMA)(4,4′-bpy)0.5(μ-OH2) 1 (M = Zn1.35Co0.15, H3TMA = benzene-1,3,5-tricarboxylic acid, 4,4′-bpy = 4,4′-dipyridyl), showing unprecedented (3,4)-connected (8.102)2(4.84.10)2(42.82.102) topology, has been synthesized hydrothermally via the self-assemble of hybrid metal ions with polydentate O-donor H3TMA ligand and coligand of rigid bidentate N-donor 4,4′-bpy.
Keywords: Hydrothermal synthesis; MOF; Topology; (3,4)-connected; Nodes;

The first polyoxometalate based on Keggin dodecatungstoselenate polyoxoanion, formulated [Cu2(2,2′-bpy)4Cl][Cu(2,2′-bpy)2SeW12O40] · 2H2O (2,2′-bpy=2,2′-bipyridine) (1) has been synthesized hydrothermally, consists of a Keggin-type dodecatungstoselenate anion [SeW12O40]2− supporting a transition metal complex group [Cu(2,2′-bpy)2]+.The first example of organic–inorganic hybrid polyoxometalate based on Keggin dodecatungstoselenate polyoxoanion, formulated [Cu2(2,2′-bpy)4Cl][Cu(2,2′-bpy)2SeW12O40] · 2H2O (2,2′-bpy=2,2′-bipyridine) (1) has been synthesized hydrothermally and characterized by elemental analyses, IR, XPS, TG and X-ray single crystal diffraction. The structural analysis of 1 shows that the polyoxoanion consists of a Keggin-type dodecatungstoselenate anion [SeW12O40]2− supporting a copper complex group [Cu(2,2′-bpy)2]+.
Keywords: Hydrothermal synthesis; Polyoxometalates; Keggin; Dodecatungstoselenate;

First oxidative synthetic route of a novel, linear mixed valence Co(III)―Co(II)―Co(III) complex with bridging acetate and salen by Shouvik Chattopadhyay; Gabriele Bocelli; Amos Musatti; Ashutosh Ghosh (1053-1057).
A linear, trinuclear mixed valence complex [CoII{(μ-L)(μ-OAc) CoIII(NCS)}2] has been prepared and its molecular structure has been elucidated on the basis of X-ray crystallography [H2L = salen = 1,6-bis(2-hydroxyphenyl)-2,5-diazahexa-1,5-diene]. The complex contains a high-spin CoII and two terminal low-spin CoIII, i.e., it is a CoIII(S  = 0)―CoII(S  = 3/2)―CoIII(S  = 0) trimer.A linear, trinuclear mixed valence complex [CoII{(μ-L)(μ-OAc)CoIII(NCS)}2] has been prepared and its molecular structure has been elucidated on the basis of X-ray crystallography [H2L = salen = 1,6-bis(2-hydroxyphenyl)-2,5-diazahexa-1,5-diene]. The complex contains a high-spin CoII and two terminal low-spin CoIII, i.e., it is a CoIII(S  = 0)―CoII(S  = 3/2)―CoIII(S  = 0) trimer.
Keywords: Mixed valence; Co(II) and Co(III); Salen; Bridging acetate; Trinuclear; Crystal structure;

The reaction of K2[M′(cdc)2]with NPr 4 n I and metal salts MX2 have afforded complex salts ( NPr 4 n ) 2 [ M ′ ( cdc ) 2 ] and heterobimetallic coordination polymers [MM′(cdc)2] [M′ = Ni(II) or Cu(II); M = Zn(II), Cd(II), Hg(II), 2Ag(I) or Pb(II)] which have been investigated using spectroscopic, magnetic and solid state electrical concductivity technique.The complex salts ( NPr 4 n ) 2 [ M ′ ( cdc ) 2 ] and the heterobimetallic coordination polymers [MM′(cdc)2] [M = Zn(II), Cd(II), Hg(II), 2Ag(I) or Pb(II); M′ = Ni(II) or Cu(II); cdc2−  = cyanodithioimidocarbonate] have been prepared and characterized by elemental analysis, solution and solid state conductivity, magnetic susceptibility, IR, 1H and 13C NMR, UV–Vis, EPR and FAB-mass spectrometry. All of the compounds exhibited semiconducting behaviour.
Keywords: Complex salts; Heterobimetallic coordination polymers; Cyanodithioimidocarbonato; Semiconductivity; 13C NMR;