Cyano and isocyano derivatives of the octahydrotriborate anion; Molecular and crystal structures of the [(Ph3P)2N]+ salts of [B3H7NCBH3]-, [(B3H7)2CN]- and [Ag(CNB3H7)2]-

Steven J. Andrews, Alan J. Welch

Research output: Contribution to journalArticle

Abstract

[Ph3P)2N][B3H7NCBH3] is triclinic, P1, with 2 ion pairs in a cell of dimensions a = 9.832(3), b = 11.490(3), and c = 16.889(2) Å, α = 105.66(2), β = 92.43(2), and γ = 101.59(2)° at 185 K. Using 5255 amplitudes the structures has been refined to R = 0.059. There are 4 ion pair of [(Ph3P)2N][B3H7)2CN] in a monoclinic unit cell, a = 17.003(4), b = 11.823(9), and c = 19.519(8) Å, β = 108.78(3)°, space group P21/a. R = 0.066 for 4840 reflections, again measured at 185 K. For [(Ph3P)2N][Ag(CNB3H72] the unit cell is a = 17.976(6), b = 11.559(3), and c = 19.20(3) Å β = 94.30(6)°, space group P21/c, and Z = 4.3742 reflections measured at 185 K have been used to refine to R = 0.074. The arrangements of hydrogen atoms in four of the five B3H7 moietes contained within these three crystal structures is common, there being one bridging-H across the B-B connectivity not involving the substituted atom.

Original languageEnglish
Pages (from-to)89-97
Number of pages9
JournalInorganica Chimica Acta
Volume105
Issue number2
DOIs
Publication statusPublished - 2 Dec 1985

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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