InCl3를 함유한 중수소 치환된 아세토나이트릴 용액의 라만 스펙트럼에서 관찰된 InCl4-이온

Abstract

Indium(III) halide complexes have shown a remarkably varied crystal chemistry; structures containing indium in 4-8 coordination are known, whereas only coordination numbers of 4 and 6 have been reported for the complexes in solution. Insertion of water molecule into the coordination sheath readily occurs, resulting in six coordinate complexes. Various mixed halogeno/aqua complexes InX n (H 2 O) 6-n 3-n (X =F, Cl, Br, I) are observed in aqueous solution. More complicate InF n X m (H 2 O) 6-n-m 3-n-m (X=Cl, Br) species have also been identified in a recent F NMR study of indium fluoride complexes. Six coordinate InX n L 6-n 3-n species can also be formed in nonaquous media for L = dimethylformamide, dimethylsulfoxide, or tributyl phosphate and X = Cl or Br, whereas only four coordinate tetrahedral InI 4 − anion is observed in the indium iodide aqueous solution with additional HI, mainly due to the large size of the iodine atom. It is also reported in In NMR studies that four coordinate indium halide anions (InX 4 −) are obtained in extraction with solvents such as acetone, methyl isobutyl ketone, ethyl ether, isopropyl ether, n-butyl acetate, cyclohexanone, and ethyl acetoacetate from HCl, HBr, and HI solutions. Tuck et al. substantiated in an In NMR study formation of In 2 Cl 6 2