Compositional and Structural Variety of Diphenyllead(IV) Complexes Obtained by Reaction of Diphenyllead Dichloride with Thiosemicarbazones

详细信息    查看全文

• 作者：José ; S. Casas ; Eduardo E. Castellano ; J. Ellena ; Mar&iacute ; a S. Garc&iacute ; a Tasende ; Agust&iacute ; n Sá ; nchez ; José ; Sordo ; and Mar&iacute ; a J. Vidarte
• 刊名：Inorganic Chemistry
• 出版年：2003
• 出版时间：April 21, 2003
• 年：2003
• 卷：42
• 期：8
• 页码：2584 - 2595
• 全文大小：262K
• 年卷期：v.42,no.8(April 21, 2003)
• ISSN：1520-510X

文摘

The reactions of PbPh₂Cl₂ in methanol with acetophenone, salicylaldehyde, pyridine-2-carbaldehyde, 2-acetylpyridine,and 2-benzoylpyridine thiosemicarbazones (HATSC, HSTSC, HPyTSC, HAcPyTSC, and HBPyTSC, respectively)were explored. Despite the similarities among these ligands, the reactions afforded solids with very diversecompositions and structural characteristics, which were in most cases analyzed by X-ray diffractometry (as was thestructure of the free ligand HBPyTSC). In the complexes [PbPh₂Cl₂(HATSC)]₂, [PbPh₂Cl₂(HSTSC)₂], [{PbPh₂Cl(HPyTSC)}₂][PbPh₂Cl₃(MeOH)]₂, and [PbPh₂Cl(PyTSC)] the metal atoms are surrounded by more or less distortedoctahedral coordination polyhedra; if both strong and weak interactions are considered, the lead atom in [PbPh₂Cl(AcPyTSC)] has coordination number 7 and distorted pentagonal bipyramidal coordination geometry, while [{PbPh₂(BPyTSC)}₂(PbPh₂Cl₄)]·2MeOH contains two different types of lead atom, one with octahedral and the other withpentagonal bipyramidal coordination. The complexes (H₂AcPyTSC)[PbPh₂Cl₃] and [PbPh₂Cl(HAcPyTSC)][PbPh₂Cl₃], which were also isolated, could not be crystallized. All these complexes are soluble in DMSO, and thecompositions of these solutions were investigated using conductivity measurements and ¹H and ²⁰⁷Pb NMRspectroscopy.