Studies On Synthesis, Characterization Of ⅠB-ⅡB Metals Chalcogenides Coordination Compound

In past tens years, synthesis and physical properties ofâ… B-â…¡B metalschalcogenides coordination compound with intriguing structure has become one of thehot topics in inorganic chemistry mainly due to the ever-increasing findings in therespects of new materials and biochemistry, etc. In our group, research on manyâ… B,â…¡B metals complexes with N, N-dialkyldithiocarbamates and PhSeH have beencarried out by using the routine methods or the solvo-thermal reaction recently.Firstly, a new Ag(â…¡) complex with N, N-diethyldithiocarbamate,Ag₂[(C₂H₅)₂NCS₂]₄ (1) has been prepared under the solvo-thermal condition and theresults from structure analysis indicate this complex was a dimer and the ligands actsas bidentate and bridging modes. Then, a series of Cd-Se clusters such as[Cd(μ₂-SePhCl)]_n(2), H[Cd₈(μ₄-Se)(μ₂-SePh)₁₅(SePh₂)] (3), (Ph₃PH)[Cd₈(μ₄-Se)(μ₂-SePh)₁₅] (4), [Mg(H₂O)₃][Cd₈(μ₄-Se)(μ₂-PhSe)₁₂(Ph₃PO)Br₃]₂ (5) and [C₆H₁₀NH]₂[Cd₈(μ)4-Se) (μ₂-SePh)₁₂I₄] (6) were successfully prepared from the different Cd(â…¡)salts with PhSeH and different assistant ligands under the solvo-thermal condition. Allthe complexes were characterized by the X-ray crystal structure analysis and otherspectroscopic methods such as IR spectra, UV-vis spectra and fluorescent spectra etc.[Cd(μ₂-SePhCl)]_n (2) was shown as a two-dimensional planar netlikecoordination polymer, which was constructed by linking two vertexes ofCdSe₂Cl₂-tetrahedron byμ₂- bridge bonds. Then, the structures of clusters (3-6) weredescribed as a nesting double tetrahedron centered aroundμ₄-Se, that iscentro-(μ₄-E)-tetrahedro-Cdn-icosahedra-(μ₂-SePh)₁₂-tetrtahedro-(CdL)₄ the centersof the tetrahedron composed by the inner four Cd(â…¡) ions [Cd(1), Cd(2), Cd(3), Cd(4)]and by the peripheral Cd(â…¡) ions [Cd(5), Cd(6), Cd(7), Cd(8)] superposed even at thecenter atomμ4-Se^2-, the inner and outer Cd ions bridged byμ₂-SePh respectively andthe terminal ligands with outer Cd atoms were PhSe, Ph₃PO, Br and I.The successful synthesis of complexes (1-6) indicated that solvo-thermal reaction wasa new way to prepareâ… B-â…¡B metals chalcogenides Coordination compound. Moreimportantly, the synthesis and characterization of (1-6) extend our knowledge about the structural chemistry of a new family ofâ… B-â…¡B metals chalcogenides Coordinationcompound。...