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Herein, we report a re-examination of the synthesis and characterization of monolayer-protected Co x (SCH 2 CH 2 Ph) m nanoclusters. These clusters were reportedly formed by the reaction of CoCl 2 with NaBH 4 in the presence of HSCH 2 CH 2 Ph and were suggested to contain between 25 and 30 Co atoms. In our hands, however, we found no experimental evidence to support the existence of these large clusters in the reaction mixture. Instead, this reaction results in the relatively clean formation of the cobalt(II) coordination complex [Co 10 (SCH 2 CH 2 Ph) 16 Cl 4 ] (1). Complex 1 has been fully characterized using a wide variety of techniques, including single-crystal X-ray crystallography, NMR spectroscopy, mass spectrometry, and magnetometry. This complex represents the first example of a thiolate-protected Co(II) T3 supertetrahedral cluster.

inorganic chemistry

A Re-examination of the Synthesis of Monolayer-Protected Cox(SCH2CH2Ph)m Nanoclusters: Unexpected Formation of a Thiolate-Protected Co(II) T3 Supertetrahedron