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Updated: Oct 19, 2025

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
Published on: May 15, 2015
Hydrostannylation of carbon dioxide by a hydridostannylene molybdenum complex
Qihao Zhu1, James C Fettinger1, Philip P Power1
1Department of Chemistry, University of California, Davis, California 95616, USA. pppower@ucdavis.edu.
Abstract:
Reaction of the aryltin(II) hydrides {AriPrSn(μ-H)}2 or {AriPrSn(μ-H)}2 (AriPr = -C6H3-2,6-(C6H3-2,6-iPr2)2, AriPr = -C6H3-2,6-(C6H2-2,4,6-iPr3)2) with two equivalents of the molybdenum carbonyl [Mo(CO)5(THF)] afforded the divalent tin hydride transition metal complexes, Mo(CO)5{Sn(AriPr)H}, (1), or Mo(CO)5{Sn(AriPr)(THF)H} (2), respectively. Complex 1 effects the facile hydrostannylation of carbon dioxide, to yield Mo(CO)5{Sn(AriPr)(κ2-O,O'-O2CH)}, (3), which features a bidentate formate ligand coordinating the tin atom. Reaction of 3 with the pinacolborane, HBpin (pin = pinacolato) in benzene regenerated 1 in quantitative yield. All complexes were characterized by X-ray crystallography, as well as UV-visible, IR, and multinuclear NMR spectroscopies. The isolation of 1 and 2 is consistent with the existence of monomeric forms of {AriPrSn(μ-H)}2 and {AriPrSn(μ-H)}2 in solution. Regeneration of 1 from 3via reaction with pinacolborane as the hydrogen source shows the catalytic potential of 1 in the hydrogenation of CO2.
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