摘要:
amine phosphonate, complexes is reported. Reaction of copper(I) with 2-,9-dimethyl-1-10-phenanthroline (dmp) produced a stable 4-coordinate Cu(I) species, [Cu(I)(dmp)(2)] Cl center dot MeOH center dot 5H(2)O (2), i.e., the increased steric hindrance in the 'bite' area of dmp did not prevent interaction with the metal and provided protection against oxidation which was not possible for the phen analogue [R. Clarke, K. Latham, C. Rix, M. Hobday, J. White, CrystEngCommun. 7(3) (2005), 28-36]. Subsequent addition of phenylphosphonic acid to (2) produced two structures from alternative synthetic routes. An 'in situ' process yielded red block Cu(I) crystals, [Cu(I)(dmp)(2)] center dot [C6H5PO3H2 center dot C6H5PO3H] (4), whilst recrystallisation of (2) prior to addition of the acid ('stepwise' process) produced a green, needle-like Cu(II) complex, [Cu(II)(dmp) center dot (H2O)(2) center dot C6H5PO2(OH)] [C6H5PO2(OH)] (3). However, addition of excess dmp during the 'stepwise' process forced the equilibrium towards product (4) and resulted in an optimum yield (99%). The structure of (4) was similar to the phen analogue, [Cu(II)Cl(phen)(2)] center dot [C6H5PO2(OH) center dot C6H5PO(OH)(2)] (1) [R. Clarke, K. Latham, C. Rix, M. Hobday, J. White, CrystEngCommun. 7(3) (2005), 28-36], but the presence of dmp exerted some influence on global packing, whilst (3) exists as a polymeric layered material. In contrast, reaction of copper(I) with di-2-pyridyl ketone (dpk), followed by phenylphosphonic acid produced purple/blue Cu(II) species, [Cu(II)(dpk center dot H2O)(2)]Cl-2 center dot 4H(2)O (5), and [Cu(II)(dpk center dot H2O) 2] center dot [ C6H5PO2(OH) 2 center dot C6H5PO(OH)(2)] (6), respectively, i.e., in both cases oxidation of copper occurred. Solid-state luminescence was observed in (2) and (4). The latter showing a 5-fold enhancement in intensity. (c) 2008 Elsevier B.V. All rights reserved.