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Lead(II) and Bismuth(III) Complexes with Macrocyclic Ligands
Author(s) -
Di Vaira Massimo,
Mani Fabrizio,
Stoppioni Piero
Publication year - 1999
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199905)1999:5<833::aid-ejic833>3.0.co;2-1
Subject(s) - chemistry , tetraphenylborate , deprotonation , dimer , bismuth , metal , chelation , coordination complex , main group element , crystallography , stereochemistry , inorganic chemistry , medicinal chemistry , polymer chemistry , transition metal , ion , organic chemistry , catalysis
The preparation and X‐ray characterization of a Pb 2+ and a Bi 3+ complex formed with macrocyclic ligands are reported. In the dimeric complex [{Pb(CH 3 COO) L BPh 4 } 2 ], where L is 1,4,7‐triazacyclononane, the metal atoms are chelated by L and bridged by an acetate group; moreover, each of the metal atoms is at contact distance from a tetraphenylborate phenyl group, which completes the coordination. The unsymmetrically derivatized macrocycle 1‐carboxymethyl‐4,7‐bis(1‐methylimidazol‐2‐ylmethyl)‐1,4,7‐triazacyclononane HL 1 , in its deprotonated ( L 1 , anionic) form gives the complex of formula BiCl L 1 BPh 4 with Bi 3+ , which contains [BiCl L 1 ] 2 2+ dimeric cations with eight‐coodinated Bi 3+ and bridging acetate groups within the dimer.