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The First [4+2]‐Coordinated Tetraorganolead Compound: Synthesis, Structure and Conversion into a Triorganolead Cation, a Benzoxaphosphaplumbole, and Diorganolead Dihalides
Author(s) -
Peveling Katja,
Schürmann Markus,
Jurkschat Klaus
Publication year - 2002
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/1521-3749(200211)628:11<2435::aid-zaac2435>3.0.co;2-s
Subject(s) - chemistry , bromine , adduct , medicinal chemistry , crystal structure , hydrogen chloride , stereochemistry , crystallography , inorganic chemistry , organic chemistry
The syntheses and molecular structures, as determined by single‐crystal X‐ray diffraction analysis, of the first intramolecularly [4+2]‐coordinated tetraorganolead compound {4‐ t ‐Bu‐2, 6‐[P(O)(OEt) 2 ] 2 C 6 H 2 }PbPh 3 ( 2 ) and the triphenyllead chloride adduct of the first intramolecularly coordinated benzoxaphosphaplumbole {[1(Pb), 3(P)‐Pb(Ph) 2 OP(O)(OEt)‐5‐ t ‐Bu‐7‐P(O)(OEt) 2 ]C 6 H 2 ·Ph 3 PbCl} ( 3a ) are reported. The reaction of 2 with [Ph 3 C] + [PF 6 ] — and p ‐MeC 6 H 4 SO 3 H, respectively, provides the triorganolead salts {4‐ t ‐Bu‐2, 6‐[P(O)(OEt) 2 ] 2 C 6 H 2 }PbPh 2 + X — ( 4 , X = PF 6 ; 4a , X = p ‐MeC 6 H 4 SO 3 ). Reaction of 2 with bromine and hydrogen chloride, respectively, gives the diorganolead dihalides {4‐ t ‐Bu‐2, 6‐[P(O)(OEt) 2 ] 2 C 6 H 2 }PbPhX 2 ( 5 , X = Br; 6 , X = Cl).