TRIGONAL PYRAMIDAL OXYANIONS AS STRUCTURE–DIRECTING TEMPLATES FOR THE SYNTHESIS OF SILVER DITHIOLATE CLUSTERS
H.-W. Chang1, J.-H. Liao1, B. Li2, Y.-J. Chen3, C.W. Liu1,2
1National Dong Hwa University, Hualien, Taiwan 97401, R. O. C
2Zhejiang A & F University, Lin'an, Zhejiang, 311300, P. R. China
3Fu Jen Catholic University, New Taipei City 24205, Taiwan, R. O. C
Keywords: silver(I) clusters, anion template, template effect, dithiophosphate ligand, trigonal pyramidal oxyanions
Abstract
Trigonal pyramidal oxyanions, EO32– (E = S, Se, Te), were utilized as a template in the formation of Ag16 clusters, which dimerize via intermolecular Ag-S bonds to form a Ag32 cluster stabilized by 1,1-dithiolate ligands. Structural elucidations on [Ag16(EO3){S2P(OEt)2}12]2+ in comparison with tetrahedral oxyanion-centered Ag16 clusters previously characterized from this group clearly suggest that the lone-pair electrons on chalcogen center has a structure-directing effect.
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