Lead(IV) complexes with phosphinoyldithioformates, R2P(O)CS2− (R = Ph or PhCH2). Syntheses and characterization. Crystal structures of [PPh4][S2CP(O)Ph2]·0.5H2O, [PbPh2{S2CP(O)Ph2}2] and [PbPh2Cl{S2CP(O)Ph2}]

Interaction of Pb2+, PbMe22+ and PbPh22+ with 3-(phenyl)-2-sulfanylpropenoic acid: A coordinative and toxicological approach

“…However, the corresponding coupling constants, n J, are very different and are smaller in all the complexes. The 3 J( 1 H-207 Pb) values for the diphenyllead complexes are in between those reported for hexa-and pentacoordinated complexes [42,50,51]. However, the 2 J( 1 H-207 Pb) parameter for the dimethyllead compound, 127.0 Hz, is lower than those reported previously for these kinds of compounds in a coordinating solvent like dmsod 6 [52] and would correspond to a coordination number lower than the five found in the solid state.…”

New diorganolead(IV) sulfanylpropenoates: Synthesis, characterization and analysis of their evolution in DMSO solution

“…The 3 J1 H 207 Pb coupling constant values (166e173 Hz) for these compounds suggest coordination numbers (CNs) between five and six for the metal [14], making it unlikely that the "naked" [Ph 2 Pb(X-pspa)] monomers (CN ¼ four) are the sole constituents of these solutions. The increase in the CN can be due to the incorporation of DMSO molecules to the monomer and/ or to the formation of dimers or polymers via the carboxylate group such as those isolated in the solid state.…”

The First [4+2]-Coordinated Tetraorganolead Compound: Synthesis, Structure and Conversion into a Triorganolead Cation, a Benzoxaphosphaplumbole, and Diorganolead Dihalides

“…Organolead compounds containing intramolecularly coordinating ligands such as acetates or ligands of type B [60], C [61], D [62], E [63], F [62], G [64], and H [65], respectively, (Chart 1) have been published. All of these compounds contain at least one electron-withdrawing substituent making the lead atom sufficiently Lewis-acidic to allow intramolecular coordination.…”