Complexation-induced distortion of a naphthalene unit symmetrically-substituted by two (N,N,P) ligands
摘要:
Binuclear complexes [M-2(mu-BPNNNa)] [BF4-](2) (M = Cu-I, 1; M = Ag-I, 2) were prepared by reaction of 1,5-bis [{6-(diphenylphosphanyl)-2-pyridylmethyl}n-propylamino methyl]naphthalene (BPNNNa) with M(CH3CN)(4) BF4 in CH2Cl2 and were structurally characterized by single crystal X-ray diffraction studies. In complexes land 2, BPNNNa acts as a chelating ligand and two dppy (2-(diphenylphosphino) pyridine) units with two metal atoms are linked together in head-to-tail mode to form an eight-membered ring, which exhibits an eclipsed conformation. A significant feature in complexes 1 and 2 is the deformation of the flat naphthalene unit, in which the two aryl moieties make an angle of 10.3 degrees (1) and 7.2 degrees (2), respectively. A weak Ag...Ag interaction is present in the complex 2. (c) 2006 Elsevier B.V. All rights reserved.