Chromium(II) chemistry. Part 13. Thiocyanates
作者:Leslie F. Larkworthy、Andrew J. Roberts、B. Joly Tucker、Ahmad Yavari
DOI:10.1039/dt9800000262
日期:——
Chromium(II) forms the pentathiocyanatochromate(II), Na3[Cr(CNS)5]·9H2O, which from magnetic, diffusereflectance, and i.r. data contains a square-pyramidal arrangement of N-bonded thiocyanates. Attempts to prepare similar salts of other metal cations have been unsuccessful, and organic cations give a series of tetrathiocyanatochromates(II), [A]2[Cr(CNS)4][A = NMe4, NEt4, NPrn4, NBun4, Hhex, Hpy, 1/2H2en
铬(II)形成五硫氰酸氰基铬酸盐(II),Na 3 [Cr(CNS)5 ]·9H 2 O,其从磁,漫反射和红外数据中可得出,它们是由N键合的硫氰酸盐组成的方形金字塔形排列。尝试制备其他金属阳离子的类似盐一直未成功,有机阳离子产生了一系列的四硫氰酸根合铬酸酯(II),[A] 2 [Cr(CNS)4 ] [A = NMe 4,NEt 4,NPr n 4,NBu n 4,Hhex,Hpy,1 / 2H 2 en或1 / 2H 2L; hex =六胺(六亚甲基四胺),py =吡啶,en =乙二胺,L = 5,7,7,12,14,14-六甲基-1,4,8,11-四氮杂环十四碳-4,11-二烯] 。通常,这些配合物表现出反铁磁性的行为,并被认为具有硫氰酸根桥连结构。[NEt 4 ] +和[NPr n 4 ] +盐的单乙醇加合物也已被分离出来,并且在磁性上是正常的。[NBu n 4 ] +盐有两种形式,