The Reactivity of Diphenyllead(IV) Dichloride with Dissymmetric Thiosemicarbazone Ligands: Obtaining Monomers, Coordination Polymers, and an Organoplumboxane
作者： Ester Sesmero , David G. Calatayud , Josefina Perles , Elena López-Torres , M. Antonia Mendiola
关键词: Polymer 、 Diacetyl 、 Semicarbazone 、 Ligand 、 Reactivity (chemistry) 、 Monomer 、 Reaction conditions 、 Stereochemistry 、 Dichloromethane 、 Chemistry 、 Polymer chemistry
摘要: The reaction of PbPh2Cl2 with two dissymmetric thiosemicarbazone ligands containing diacetyl 4-methyl-3-thiosemicarbazone and hydrazonepyridine or hydrazonequinoline arms led to four new mononuclear complexes, [PbPh2(L)] (1 3) [PbPh2Cl(HL)] (2 4). Reactions the ligand strongly depend on conditions several unexpected compounds were isolated. At room temperature, in addition complex 4, polymeric compound [PbPh2Cl2CH3OH]n (5) was isolated, whereas under heating at reflux a symmetrization took place polymer bis(4-methyl-3-thiosemicarbazone), [PbPh2Cl2(H2ATSM)]n (6) obtained. When heated wet dichloromethane LiOH·H2O, tetranuclear organoplumboxane [Pb4Ph8Cl4O2] (7) which, best our knowledge, is first be crystallographically characterized. All thoroughly characterized, including by 207Pb NMR single-crystal XRD. In addition, has demonstrated its potential application as chromophoric probe visible region for organolead(IV) species.
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