Acid Co(II) and Ni(II) trifluoroacetate complexes: Synthesis and crystal structureстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Anhydrous and partially hydrated acid trinuclear trifluoroacetates of divalent transition metals of the composition [M-3(CF3COO)(6)(CF3COOH)(6)](CF3COOH) and [M-3(CF3COO)(6)(CF3COOH)(2)(H2O)(4)](CF3COOH)(2), respectively, where M = Co (I, III) Ni (II, IV), were synthesized and studied by X-ray diffraction. Complexes I and 11 were obtained by crystallization from solutions of M(CF3COO)(2)center dot 4H(2)O in trifluoroacetic anhydride; complexes III and IV were synthesized under the same conditions with the use of 99% trifluoroacetic acid as a solvent. Crystals I are triclinic: space group P I, a = 13.199(6) angstrom, b = 14.649(6) angstrom, c = 15.818(6) angstrom, alpha = 90.04(4)degrees, beta = 114.32(4)degrees, gamma = 108.55(4)degrees, V = 2611.3(19) angstrom(3), Z = 2, R = 0.0480. Crystals II are trigonal: space group R (3) over bar, a = 13.307(2) angstrom, c = 53.13(1) angstrom, V = 8148(2) angstrom(3), Z = 6, R = 0.1112. Crystals III are triclinic: space group P (1) over bar, a = 9.001(8) angstrom, b = 10.379(9) angstrom, c = 12.119(9) angstrom, alpha = 83.67(5)degrees, beta = 72.33(5)degrees, gamma = 83.44(5)degrees, V = 1068.3(15) angstrom(3), Z = 1 angstrom, R = 0.1031. Crystals IV are triclinic: space group P (1) over bar, a = 9.121(18) angstrom, b = 10.379(2) angstrom, c = 12.109(2) angstrom, alpha = 84.59(3)degrees, beta = 72.20(3)degrees, gamma = 82.80(3)0, V = 1080.94(40) angstrom(3), Z = 1, R = 0.0334.