摘要:
Two new lead(II) 4-sulfobenzoate complexes with amine ligands, [Pb(4-sb)(2,2'-bipy)](n) (1) and {[Pb(4-sb)(4,4'-bipy)(1/2)]center dot(4,4'-bipy)(1/2)}(n) (2) (2,2'-bipy = 2,2'-bipyridine; 4,4'-bipy = 4,4'-bipyridine; 4-sb = 4-sulfobenzoate dianion), were synthesized and characterized by single-crystal X-ray analyses, IR, TG, elemental analyses and fluorescent studies. Complexes I and 2, in addition to previously reported [Pb(4-sb)(H2O)(2)](n) (3) and {[Pb(4-sb)(phen)]center dot(H2O)}(n) (4) where phen is 1,10-phenanthroline, all contain [Pb(4-sb)] building units, while four [Pb(4-sb)] networks in 1-4 are very different, which is significantly influenced by the neutral ligands. The coordination array of complex 1 is a 2-D network in which each 4-sb acts as a eta(5)-mu(3) mode while the complex 2 is a 3-D architecture in which each 4-sb performs a eta(5)-mu(6) mode. Both coordination modes of 4-sb ligands in 1-2 are novel and first reported in this paper. (c) 2007 Elsevier B.V. All rights reserved.