The gaseous structure of closo-9,12-(SH)2-1,2-C2B10H10, a modifier of gold surfaces, as determined using electron diffraction and computational methods

Derek A. Wann, Paul D. Lane, Heather E. Robertson, Tomáš Baše, Drahomir Hnyk

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9 Citations (Scopus)

Abstract

The molecular structure of closo-9,12-(SH)(2)-1,2-C2B10H10 has been determined by the concerted use of quantum chemical calculations and gas electron diffraction (GED). For the purposes of GED, the architecture of the carbaborane cage was simplified to allow it to have C-2v symmetry, while the positioning of the thiol groups means that the molecule had overall C-1 symmetry. The accuracy of the experimental structure, as well as that calculated at the MP2(full)/6-311++G(3df,3pd) level, has been gauged by comparison of experimental B-11 NMR chemical shifts with those calculated using gauge-invariant atomic orbitals (GIAO) methods. The inclusion of electron correlation in the magnetic property calculations (GIAO-MP2) gave superior results to those carried out using GIAO-HF. The electronic structure of this derivative, with respect to its directional interaction with a metal surface, is outlined.

Original languageEnglish
Pages (from-to)12015-12019
Number of pages5
JournalDalton Transactions
Volume42
Issue number33
DOIs
Publication statusPublished - 2013

Keywords

  • AB-INITIO CALCULATIONS
  • GAUSSIAN-BASIS SETS
  • CORRELATED MOLECULAR CALCULATIONS
  • NMR CHEMICAL-SHIFTS
  • GAS-PHASE
  • WAVE-FUNCTIONS
  • ATOMS
  • DENSITY
  • THERMOCHEMISTRY
  • CARBABORANES

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