Chiral Cyanide-Bridged CrIII–MnIII Heterobimetallic Chains Based on [(Tp)Cr(CN)3]−: Synthesis, Structures, and Magnetic Properties
作者： Min-Xia Yao , Qi Zheng , Xu-Min Cai , Yi-Zhi Li , You Song
DOI: 10.1021/IC201982D
关键词: Circular dichroism 、 Antiferromagnetism 、 Optically active 、 Chemistry 、 Crystallography 、 Stereochemistry 、 Cyanide 、 Enantiomer 、 Tris
摘要: By the reactions of MnIII Schiff-base complexes with tricyanometalate building block, [(Tp)Cr(CN)3]− (Tp = Tris(pyrazolyl) hydroborate), two couples enantiomerically pure chiral cyano-bridged heterobimetallic one-dimensional (1D) chain complexes, [Mn((R,R)-Salcy)Cr(Tp)(CN)3·1/4H2O·1/2CH2Cl2]n (1) and [Mn((S,S)-Salcy)Cr(Tp)(CN)3·1/4H2O·1/2CH2Cl2]n (2) (Salcy N,N′-(1,2-cyclohexanediylethylene)bis(salicylideneiminato) dianion), [Mn((R,R)-Salphen)Cr(Tp)(CN)3]n (3) [Mn((S,S)-Salphen)Cr(Tp)(CN)3]n (4) (Salphen N,N′-1,2-diphenylethylene-bis(salicylideneiminato) have been successfully synthesized. Circular dichroism (CD) spectra confirm enantiomeric nature optically active complexes. Structural analyses reveal formation neutral zigzag single chains in 1 2, double 3 4. Magnetic studies show that antiferromagnetic couplings are operative between CrIII centers bridged by cyanide. Complexes 2 ar...
acs.org
sci-hub.se 参考文章(115)
Hiroyuki Imai, Katsuya Inoue, Kohichi Kikuchi, Yusuke Yoshida, Mitsuhiro Ito, Tetsuya Sunahara, Satoru Onaka, Three-dimensional chiral molecule-based ferrimagnet with triple-helical-strand structure. Angewandte Chemie. ,vol. 43, pp. 5618- 5621 ,(2004) , 10.1002/ANIE.200460867
Chun Yang, Qing-Lun Wang, Jing Qi, Yue Ma, Shi-Ping Yan, Guang-Ming Yang, Peng Cheng, Dai-Zheng Liao, Two novel cyanide-bridged bimetallic magnetic chains derived from manganese(III) Schiff bases and hexacyanochromate(III) building blocks. Inorganic Chemistry. ,vol. 50, pp. 4006- 4015 ,(2011) , 10.1021/IC102495T
Joel S. Miller, Three-dimensional network-structured cyanide-based magnets Mrs Bulletin. ,vol. 25, pp. 60- 64 ,(2000) , 10.1557/MRS2000.225
Keitaro Nakatani, Jean Yves Carriat, Yves Journaux, Olivier Kahn, Francisco Lloret, Jean Pierre Renard, Yu Pei, Jorunn Sletten, Michel Verdaguer, Chemistry and physics of the novel molecular-based compound exhibiting a spontaneous magnetization below Tc = 14 K, MnCu(obbz).cntdot.1H2O (obbz = oxamidobis(benzoato)). Comparison with the antiferromagnet MnCu(obbz).cntdot.5H2O. Crystal structure and magnetic properties of NiCu(obbz).cntdot.6H2O Journal of the American Chemical Society. ,vol. 111, pp. 5739- 5748 ,(1989) , 10.1021/JA00197A036
Molecule-based magnetic materials : theory, techniques, and applications American Chemical Society. ,(1996) , 10.1021/BK-1996-0644
Jik Chin, Soo Suk Lee, Kyung Joo Lee, Seongsoon Park, Dong H. Kim, A metal complex that binds α-amino acids with high and predictable stereospecificity Nature. ,vol. 401, pp. 254- 257 ,(1999) , 10.1038/45751
G. L. J. A. Rikken, E. Raupach, Observation of magneto-chiral dichroism Nature. ,vol. 390, pp. 493- 494 ,(1997) , 10.1038/37323
Cyrille Train, Michel Gruselle, Michel Verdaguer, The fruitful introduction of chirality and control of absolute configurations in molecular magnets Chemical Society Reviews. ,vol. 40, pp. 3297- 3312 ,(2011) , 10.1039/C1CS15012J
Brendan J. Kennedy, Keith S. Murray, Magnetic properties and zero-field splitting in high-spin manganese(III) complexes. 1. Mononuclear and polynuclear Schiff-base chelates Inorganic Chemistry. ,vol. 24, pp. 1552- 1557 ,(1985) , 10.1021/IC00204A029
Youhei Numata, Katsuya Inoue, Studies for Direction Dependences of Magnetizations and Magnetic Structure of Chiral Molecule-based Metamagnet, [Mn(hfac)2]·BNO* Chemistry Letters. ,vol. 36, pp. 534- 535 ,(2007) , 10.1246/CL.2007.534