Abstract
Site-differentiated solvated clusters of the general formula [Re6(μ3-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, [Re6(μ3-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 language | English (US) |
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Pages (from-to) | 1656-1662 |
Number of pages | 7 |
Journal | Inorganic Chemistry |
Volume | 42 |
Issue number | 5 |
DOIs | |
State | Published - Mar 10 2003 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry