The dithiooxalate-bridged complex [Cr(C2O2S2)3(NiL)3][ClO4]3(L = racemic 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane): synthesis, crystal structure and magnetism
作者： Minoru Mitsumi , Hisashi Ökawa , Hiroshi Sakiyama , Masaaki Ohba , Naohide Matsumoto
DOI: 10.1039/DT9930002991
关键词:
摘要: The reaction of KCa[Cr(C2O2S2)3]·6H2O (C2O2S2= dithiooxalate) and [NiL][ClO4]2(L = racemic 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane) in the 1:3 molar ratio gave a chromium(III)trinickel(II) complex [Cr(C2O2S2)3(NiL)3][ClO4]3. It crystallizes with two dimethylformamide PriOH molecules monoclinic space group C2/c, a= 31.51(1), b= 17.447(6), c= 19.05(1)A, β= 112.75(4)° Z= 4. has CrNi3 core bridged by dithiooxalate groups which bond through sulfur atoms to Cr oxygen Ni. ⋯ Ni separation is 5.959(5)–5.999(6)A. CrS6 entity shows distortion trigonal-prismatic geometry. Each nickel ion assumes pseudo-octahedral geometry C2O2S2 four nitrogen L folded form. Cryomagnetic studies (4.2–300 K) revealed ferromagnetic spin-exchange interaction between CrIII NiII(J=+5.9 cm–1 based on ℋ=–2ΣJijSiSj).
rsc.org
elsevier.com
sci-hub.se 参考文章(36)
Olivier Kahn, Magnetism of the heteropolymetallic systems ChemInform. ,vol. 19, pp. 89- 167 ,(1987) , 10.1007/3-540-18058-3_3
James A. Ibers, Lonsdale, Kathleen, Dame, John S. Kasper, Gerard D. Rieck, Walter C. Hamilton, Norman Fordyce McKerron Henry, Caroline H. MacGillavry, International tables for X-ray crystallography UT Back-in-Print Service. ,(1962)
Edward A. Boudreaux, L. N. Mulay, Theory and applications of molecular diamagnetism ,(1976)
C Cairns, Intramolecular ferromagnetic interactions in polynuclear metal complexes Coordination Chemistry Reviews. ,vol. 69, pp. 1- 55 ,(1986) , 10.1016/0010-8545(86)85008-1
Alessandro Bencini, Antonio C. Fabretti, Claudia Zanchini, Paolo Zannini, Anisotropic exchange in dinuclear complexes with polyatomic bridges. Crystal and molecular structure and EPR spectra of (.mu.-oxalato)bis(1,10-phenanthroline)dicopper(II) dinitrate Inorganic Chemistry. ,vol. 26, pp. 1445- 1449 ,(1987) , 10.1021/IC00256A024
M. R. Snow, K. R. Butler, Cotton effect of tris(1,3-diaminopropane)cobalt(III) ion, Co(tn)33+ Inorganic Chemistry. ,vol. 10, pp. 1838- 1840 ,(1971) , 10.1021/IC50102A067
D. Michael Duggan, E. Kent Barefield, David N. Hendrickson, Magnetic exchange in oxalate- and squarate-bridged nickel(II) dimer complexes Inorganic Chemistry. ,vol. 12, pp. 985- 991 ,(1973) , 10.1021/IC50123A004
Masaaki Ohba, Hiroko Tamaki, Naohide Matsumoto, Hisashi Okawa, Sigeo Kida, Correlation between Spin-Coupling Constants of Oxalate-bridged Binuclear Cu(II)–Cr(III) Complexes and of Ferromagnetic Phase-Transition Temperature Tc of {NBu4[CuCr(ox)3]}x Chemistry Letters. ,vol. 20, pp. 1157- 1160 ,(1991) , 10.1246/CL.1991.1157
Hiroko Tamaki, Zhuang J. Zhong, Naohide Matsumoto, Sigeo Kida, Masayuki Koikawa, Norio Achiwa, Yuzo Hashimoto, Hisashi Okawa, Design of metal-complex magnets. Syntheses and magnetic properties of mixed-metal assemblies {NBu4[MCr(ox)3]}x (NBu4+ = tetra(n-butyl)ammonium ion; ox2- = oxalate ion; M = Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+) Journal of the American Chemical Society. ,vol. 114, pp. 6974- 6979 ,(1992) , 10.1021/JA00044A004
Olivier. Kahn, Yu. Pei, Michel. Verdaguer, Jean Pierre. Renard, Jorunn. Sletten, Magnetic ordering of manganese(II) copper(II) bimetallic chains; design of a molecular based ferromagnet Journal of the American Chemical Society. ,vol. 110, pp. 782- 789 ,(1988) , 10.1021/JA00211A017