Two new dinuclear Pd(II) cyclometalated complexes of formula [L2Pd2(mu-1,2-sq)(C5H11N)(2)] (1) and [L2Pd2(mu-1,3-sq)(C5H11N)(2)]. 2[(C5H12N)BF4] (1a) [HL = 2,6-dimethylazobenzene], have been synthetized from a reaction of the mononuclear [LPd(acetone)(2)][BF4] with the piperidinium salt of squaric acid, [C5H12N](2)[sq]. The single crystal X-ray analysis of complexes 1 and 1a shows that the sq ligand is found to bridge in both mu-1,2- and mu-1,3-coordination modes. These are the first examples of squarato Pd(II) complexes characterized structurally up to now. (C) 2000 Elsevier Science S.A. All rights reserved.
Synthesis and Crystal Structure of Dinuclear Cyclopalladated 1,2-and 1,3-Bridged Squarato Complexes
A. Crispini;D. Pucci;I. Aiello;M. Ghedini
2000-01-01
Abstract
Two new dinuclear Pd(II) cyclometalated complexes of formula [L2Pd2(mu-1,2-sq)(C5H11N)(2)] (1) and [L2Pd2(mu-1,3-sq)(C5H11N)(2)]. 2[(C5H12N)BF4] (1a) [HL = 2,6-dimethylazobenzene], have been synthetized from a reaction of the mononuclear [LPd(acetone)(2)][BF4] with the piperidinium salt of squaric acid, [C5H12N](2)[sq]. The single crystal X-ray analysis of complexes 1 and 1a shows that the sq ligand is found to bridge in both mu-1,2- and mu-1,3-coordination modes. These are the first examples of squarato Pd(II) complexes characterized structurally up to now. (C) 2000 Elsevier Science S.A. All rights reserved.File in questo prodotto:
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