trans-{Co(CNC6H3Et2-2,6)4}(ClO4)2 | 135694-20-1

• 英文名称: trans-{Co(CNC6H3Et2-2,6)4}(ClO4)2
• CAS: 135694-20-1
• 化学式: C₄₄H₅₂Cl₂CoN₄O₈
• 分子量: 894.818
• InChiKey: ZCVNFYKTZUKZQN-UHFFFAOYSA-L

反应信息

• 作为产物：
  描述：

  {Co(CNC6H3Et2-2,6)5}(ClO4)2*99H2O 以 乙醚 、 二氯甲烷 为溶剂， 以85-90的产率得到trans-{Co(CNC6H3Et2-2,6)4}(ClO4)2
  参考文献：
  名称：

  Synthesis, characterization and molecular structure of tetrakis(2,6-diethylphenylisocyanide)bis(perchlorato)cobalt(II). An example of dissimilarity between perchlorate and tetrafluoroborate salts

  摘要：

  Reaction of 2,6-Et2C6H3NC in 5:1 mole ratio with Co(II) produces Co(CNR)5X2.H2O, R = 2,6-Et2C6H3; X = ClO4, BF4; but the perchlorate salt spontaneously decomposes in solid state to Co(CNR)4(ClO4)2. The species Co(CNR)4(ClO4)2 was determined by X-ray crystallography to contain equivalent, monodentate, trans-coordinated perchlorate ions with average Co-O bond length 2.266(7) angstrom, and inequivalent arylisocyanide ligands with average Co-C bond lengths 1.896(13) and 1.887(11) angstrom in approximately square planar coordination (C-Co-C bond angles 87.8(4) and 92.2(4)-degrees, i.e. trans-[Co(CNR)4(ClO4)2]. Inequivalency of the arylisocyanides is achieved primarily through different tilt of the phenyl rings relative to the CoC4 plane and location of the perchlorates directly above or below one pair of CNR. The complex crystallizes in triclinic space group P1BAR with a = 11.550(3), b = 13.464(4), c = 15.684(3) angstrom, alpha = 77.39(2), beta = 68.43(2), gamma = 86.17(3)-degrees. Final discrepancy values of R = 0.0726 (R(w) = 0.0573) were obtained from 3723 unique, observed reflections. Solid state physical properties (IR, diffuse reflectance and magnetic susceptibility) are compared for [Co(CNR)4(ClO4)2] and [Co(CNR)5](BF4)2.H2O. Previously reported [Co(CNC6H3Me2-2,6)4](ClO4)2 should now be formulated as trans-[Co(CNC6H3Me2-2,6)4(ClO4)2], but the tetrafluoroborate ions in both Co(CNC6H3Et2-2,6)5(BF4)2.H2O and Co(CNC6H3Me2-2,6)5(BF4)2.0.5H2O are probably ionic.

  DOI：

  10.1016/s0020-1693(00)85182-8