Syntheses, characterization and crystal structures of copper(I) o-(diphenylphosphino)benzaldehyde complexes
摘要:
The complexes [Cu(PCHO)(2)(NCMe)][BF4] (1) and [Cu(PCHO)(3)][BF4](2) have been prepared by treating [Cu(NCMe)(4)][BF4] with two and three equivalents of Ph2P(o-C6H4)C(=O)H (abbreviated as PCHO) at room temperature, respectively. The reaction of I and (Ph2PC5H4)(2)Fe (abbreviated as DPPF) affords [Cu(PCHO)(DPPF)][BF4] (3). The molecular structures of 1-3 have been determined by an X-ray diffraction study. The aldehyde groups in I are pendant, while one of the formyl groups in 2 is weakly coordinated to the copper ion through the oxygen atom. On the other hand, the copper atom in 3 is strongly chelated by both DPPF and PCHO ligands. (c) 2005 Elsevier B.V. All rights reserved.