Hydrogen-bonded extended arrays of the [Re63-Se)8]2+ core-containing clusters

Hugh D. Selby, Bryan K. Roland, Michael D. Carducci, Zhiping Zheng

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Abstract

Site-differentiated solvated clusters of the general formula [Re63-Se)8(PEt3) n(MeCN)6-n](SbF6)2 (n = 4, cis and trans; n = 5) undergo ligand substitution reaction with isonicotinamide to afford the corresponding amide derivatives, [Re63-Se)8(PEt3) n(isonicotinamide)6-n]2+ [1 (n = 5); 2 (n = 4, trans); 3 (n = 4, cis)]. Retention of stereochemistry in each case was confirmed by 1H and 31P NMR. The solid-state structures of all three compounds were established crystallographically, which revealed self-complementary hydrogen-bonding interactions between adjacent cluster units. While complex 1 exists as hydrogen-bonded dimers in the solid state, compounds 2 and 3 form one-dimensional chains of clusters bridged by paired hydrogen bonds. It is the rigid stereochemistry of the cluster, combined with the classic crystal engineering motif of complementary N-H⋯O amide hydrogen bonding, that affords the predictable solid-state structures and dimensionality.

Original languageEnglish (US)
Pages (from-to)1656-1662
Number of pages7
JournalInorganic Chemistry
Volume42
Issue number5
DOIs
StatePublished - Mar 10 2003

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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