Search

Two copper complexes [Cu(TTA)2(4,4′-azpy)] (1) and [Cu-(TTA)2(3,3′-azpy)] (2) (HTTA = 1,1,1-trifluoro-3-(2-thenoyl)-acetone, 4,4′-azpy = 4,4′-azobispyridine, 3,3′-azpy = 3,3′-azobispyridine) were synthesized and characterized. The crystal structures were determined by X-ray diffraction analysis. The crystal 1 belongs to triclinic with space group P1, a = 0.8515(2) nm, b = 0.9259(2) nm, c = 0.9468(2) nm, a = 66.126(9)°, β = 79.667(9)°, γ = 90.13(1)°, Z = 1, V = 0.6692(2) nm3, Dc = 3.425 g/cm3, γ = 2.113 mm−1, F(000) = 694, R1 = 0.0594, wR2 = 0.1499. The crystal 2 belongs to monoclinic with space group P21/c, a = 1.0661(2) nm, b = 1.4296(3) ran, c = 1.0041(3) nm, β = 114.50(3)°, V = 1.3926(5) nm3, Z = 2, Dc = 1.646 g/ cm3, μ = 1.015 mm−1, F(000) = 694, R1, = 0.0535, wR2 = 0.1113. In the crystals of complexes 1 and 2, the copper atoms have distorted octahedral symmetry. The two compounds possess very similar one-dimensional linear chains linked through the rodlike 4,4′-azpy ligands or 3,3′-azpy ligands.

Five novel chiral ferrocenyl amino alcohols were prepared from natural amino adds and used as catalysts in the asymmetric reduction of prochiral ketones with NaBH4/I2 combination. The incorporation of the ferrocenyl moiety into the molecule of the chiral amino alcohols greatly improved their enantioselectivity in the catalysis. The optically active secondary alcohols were obtained in moderate to good enantiomeric excesses and high chemical yields.

Nonlinear optical properties of a metal cluster [PPh4][Cp*MoS3(CuBr)3] have been studied, with the third-order susceptibility X (3) for this cluster determined by degenerate four-wave mixing (DFWM) experiment, the optical limiting (OL) effect observed by transmission technique, and the nonlinear absorption measured by using Z-scan technique.