cg050081g_si_001.cif (45.35 kB)

Two Homochiral Copper(I) Complexes with Strong Luminescence Based on Chiral Phase Transfer Catalysts (PTCs) as Building Blocks

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posted on 06.07.2005, 00:00 by Yu-Mei Song, Qiong Ye, Yun-Zhi Tang, Qian Wu, Ren-Gen Xiong
N-3-Cyanobenzylcinchonidinium bromide (N-3-CBC) (1) as a homochiral spacer reacts with CuBr under hydrothermal conditions, resulting in the formation of discrete CuBr2(N-3-CBC)(CH3OH) (2). Similarly, a chiral phase transfer catalyst (CPTC) building block, [bis(N,N‘-cinchoninium)-p-xylene dibromide (NCXD)] (3), was employed as an asymmetric bridging linker to construct a one-dimensional (1D) photoluminescence coordination polymer, Cu2Br4(NCXD)(H2O)3 (4). Compounds 2 and 4 exhibit bright luminescent emissions at room temperature upon irradiation by UV light. Crystal data for 2:  space group P21 with a = 8.3596(7) Å, b = 20.1496(17) Å, c = 8.7591(8) Å, α = γ = 90°, β = 110.517(2)°, V = 1381.8(2) Å3, Z = 2, R1 [I > 2σ(I)] = 0.0539, wR2 (all) = 0.1336, Flack value = 0.011(14); crystal data for 4:  space group P212121 with a = 21.4407(18) Å, b = 24.779(2) Å, c = 9.2166(8) Å, α = β = γ = 90°, V = 4896.6(7) Å3, Z = 4, R1 [I > 2σ(I)] = 0.1051, wR2 (all) = 0.2760, Flack value = 0.11(3).

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