作者:Andrew M. McDonagh、Nigel T. Lucas、Marie P. Cifuentes、Mark G. Humphrey、Stephan Houbrechts、André Persoons
DOI:10.1016/s0022-328x(00)00311-9
日期:2000.7
The syntheses of the alkyne (E)-4,4'-HC drop CC6H4N=NC6H4NO2 (1) and alkynyl complexes LnM(E)-4,4'-C drop CC6H4N=NC6H4NO2} [LnM: = trans-[RuCl(dppm)(2)] (2), Ru(PPh3)(2)(eta-C5H5) (3), Au(PPh3) (4)] are reported. A structural study of 2 reveals E stereochemistry about the azo- linkage. Electrochemical data for the ruthenium complexes reveal that the azo-linkage in complexes 2 and 3 perturbs the metal-centred oxidation potential compared to all other alkynyl complexes of similar composition. Quadratic optical nonlinearities by hyper-Rayleigh scattering (HRS) at 1064 nm are very large for 2 and 3, but resonance-enhanced. Comparison of HRS data for 4 with those of Au(E)-4,4'-C drop CC6H4X=CHC6H4NO2}(PPh3) (X = CH, N) reveals that complex 4 has a significantly larger quadratic nonlinearity than its ene- or imino-linked analogues. (C) 2000 Elsevier Science S.A. All rights reserved.
Organometallic complexes for nonlinear optics. 41: Syntheses and quadratic NLO properties of 4-{4-(4-nitrophenyl)diazophenyl}ethynylphenylethynyl complexes
作者:Timothy N. Fondum、Katy A. Green、Michael D. Randles、Marie P. Cifuentes、Anthony C. Willis、Ayele Teshome、Inge Asselberghs、Koen Clays、Mark G. Humphrey
DOI:10.1016/j.jorganchem.2007.11.004
日期:2008.4
The syntheses of [Au(C C-4-C(6)H(4)C C-4-C(6)H(4)N=N-4-C(6)H(4)NO(2))(PPh(3))] (3), trans-[Ru(C C-4-C(6)H(4)-C C-4-C(6)H(4)N=N-4-C(6)H(4)NO(2))Cl(dppm)(2)] (4), [Ru(C C-4-C(6)H(4)C C-4-C(6)H(4)N=N-4-C(6)H(4)NO(2))(dppe)(eta-C(5)Me(5))] (5), and [Ni(C C-4-C(6)H(4)N=N-4-C(6)H(4)NO(2))(PPh(3))(eta-C(5)H(5))] (6) are reported, together with a single-crystal X-ray diffraction study of 4. Quadratic nonlinearities for 3-6 and [Ru(C C-4-C(6)H(4)NO(2))(dppe)(eta-C(5)Me(5))] (7) have been determined at 1.064 mu m and 1.300 mu m by the hyper-Rayleigh scattering (HRS) technique, comparison to related complexes revealing that beta values increase on introduction of azo group and pi-system lengthening. (C) 2007 Elsevier B.V. All rights reserved.