Synthesis, crystal structure, IR and Raman properties of 1,2-diacetamidocyclohexane and its complexes with ZnBr2 and HBr3

被引:4
作者
Bekaert, A
Lemoine, P [1 ]
Viossat, B
Jouan, M
Gemeiner, P
Brion, JD
机构
[1] Univ Paris 05, Fac Sci Pharmaceut & Biol, CNRS, UMR 8015,Lab Cristallog & RMN Biol, F-75006 Paris, France
[2] Univ Paris 11, Fac Pharm, Chim Therapeut Lab,UPRES A 8076, BioCIS,CNRS, F-92290 Chatenay Malabry, France
[3] Ecole Cent Paris, CNRS, UMR 8580, Lab SPMS, F-92290 Chatenay Malabry, France
关键词
DAACH; complexes with Zn(II) or H+; X-ray structures; IR; Raman;
D O I
10.1016/j.molstruc.2004.10.068
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
X-ray crystallography, infrared absorption and Raman scattering were applied to study the influence of Zn(II) or H+ on the amidic bond. (R,R)-1,2-diacetamidocyclohexane (DAACH) was chosen as a conformationally strained chiral building block including two amide bonds; this model is hoped to be not too far from a peptide and gives easily crystalline complexes. Crystallographic structures of DAACH molecule (1), DAACH/ZnBr2 (2) and DAACH/HBr3 (3) complexes were studied. Complexation of Zn by DAACH is due to the hyperpolarization of the amidic bond. IR and Raman studies of 1-3 agree with the X-ray results. This could be a model in the study of metal/proteins interactions or acidic denaturation of polypeptides. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:39 / 44
页数:6
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