An Interesting Complex: [Cd(L-trp) (D-trp)]_n

摘要

A novel coordination polymer [Cd(L-trp)(D-trp)]_n (where L-trp and D-trp are L-tryptophan and D-tryptophan or (S)-2-amino-3-(3-indolyl)propionic acid and (R)-2-amino-3-(3-indolyl)propionic acid) was prepared by a sol vent-thermal method and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The compound(monoclinic space group P2(1)/c with a = 19.759(2) A, b = 5.2496(10) A, c = 9,7594(16) A, β = 97.2760(10)°, Z = 2) shows a two-dimensional plane structure. The crystallized coordination polymer has a cen-trosymmetric space group. Each Cd~(2+) ion coordinates with a pair of racemes, and the complex is a mesomer. Although L-trp was used, both L-trp and D-trp appear in the complex.