Inducing molecular growth in an {Mo₅₇Fe₆}-type nanocluster: synthesis, structure, and properties of {Mo₅₇}(Mo)₂Fe₆^III}

Fielden, J., Malaestean, Y.L., Ellern, A., García-Serres, R., Cronin, L. and Kögerler, P. (2006) Inducing molecular growth in an {Mo₅₇Fe₆}-type nanocluster: synthesis, structure, and properties of {Mo₅₇}(Mo)₂Fe₆^III}. Journal of Cluster Science, 17(2), pp. 291-302. (doi: 10.1007/s10876-006-0053-1)

Abstract

The reaction of the polyoxomolybdate anion [Mo₃₂^IV(MoNO)₄O₁₀₈(H₂O)₁₆]^12-with Fe^II salts and hydrazine sulfate yields the cluster anion [Mo₅₁^V/VI(Mo^VIO)₂Fe₆^III(MoNO)₆O₁₇₆(OH)₃(H₂O)₂₂]^15- (1a), isolated as its corresponding ammonium salt (NH₄)₁₅ <b>1a</b> 36H₂O (<b>1</b>) (space group P63/mmc, a=b=23.607(5) Å, c=26.767(6) Å, 4076 unique reflections, 293 parameters). Despite the absence of oxygen and the reducing conditions the product comprises only Fe^III centers as determined by a combination of spectroscopic, magnetic and crystallographic analysis. Reduction of peripheral Mo centers causes the aggregation of two additional [Mo^VIO]⁴⁺ groups onto the archetypal {Mo₅₇M₆} structure. The single-crystal X-ray determined structure of <b>1</b> is reported.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Fielden, Dr John and Cronin, Professor Lee
• Authors: Fielden, J., Malaestean, Y.L., Ellern, A., García-Serres, R., Cronin, L., and Kögerler, P.
• Subjects: Q Science > QD Chemistry
• College/School: College of Science and Engineering > School of Chemistry; University Centres > Glasgow Materials Research Initiative
• Journal Name: Journal of Cluster Science
• Publisher: Kluwer Academic Publishers-Plenum Publishers
• ISSN: 1040-7278
• ISSN (Online): 1572-8862