High-Nuclearity Heterometallic tert-Butylethynide Clusters Assembled with tert-Butylphosphonate

Guang-Xiong Duan; Yun-Peng Xie; Jun-Ling Jin; Li-Piao Bao; Xing Lu; Thomas C W Mak

doi:10.1002/chem.201705906

High-Nuclearity Heterometallic tert-Butylethynide Clusters Assembled with tert-Butylphosphonate

Chemistry. 2018 May 7;24(26):6762-6768. doi: 10.1002/chem.201705906. Epub 2018 Mar 22.

Authors

Guang-Xiong Duan¹, Yun-Peng Xie¹, Jun-Ling Jin¹, Li-Piao Bao¹, Xing Lu¹, Thomas C W Mak²

Affiliations

¹ State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology (HUST), Wuhan, 430074, P.R. China.
² Department of Chemistry and Center of Novel Functional Molecules, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, P.R. China.

PMID: 29473225
DOI: 10.1002/chem.201705906

Abstract

tert-Butylphosphonic acid and lanthanide precursors were employed to construct two high-nuclearity hybrid silver(I)-ytterbium(III) phosphonate clusters: compound 1 consists of a Ag₁₆ ethynide cluster fused with a trinuclear hydroxoytterbium phosphonate cluster, whereas compound 2 is composed of two Ag₁₆ ethynide clusters bridged by a hexanuclear oxo/hydroxoytterbium phosphonate cluster. Using transition-metal-substituted lacunary polyoxotungstates in place of the lanthanide reactant, new phosphonate-functionalized silver(I)-copper(II) ethynide clusters [Ag₃₄ Cu₆ (3) and Ag₃₇ Cu₆ (4)] and silver(I) ethynide clusters [Ag₅₁ (5) and Ag₇₂ (6)] were obtained. The structures of complexes 3-6 feature core-shell arrangements, in which silver(I)-copper(II) or silver(I) ethynide cluster shells stabilized by peripheral phosphonate ligands enclose different kinds of tungstate core templates.

Keywords: cluster compounds; lanthanides; phosphonates; polyoxometalates; silver.