Issue 43, 2006

Insertion reaction of carbon dioxide into Sn–OR bond. Synthesis, structure and DFT calculations of di- and tetranuclear isopropylcarbonato tin(iv) complexes

Abstract

The reaction of carbon dioxide with the stannane nBu2Sn(OiPr)2 and distannoxane [nBu2(iPrO)Sn]2O leads to the selective insertion into one Sn–OiPr bond generating the corresponding nBu2Sn(OiPr)(OCO2iPr) and nBu2(iPrO)SnOSn(OCO2iPr)nBu2 species. Both compounds are characterised by multinuclear NMR, FT-IR and single-crystal X-ray crystallography. In the solid state, they adopt a dimeric arrangement with bridging isopropoxy and terminal isopropylcarbonato ligands. The X-ray crystal structure of the dinuclear stannane shows that the Sn2O2 ring and the two Sn–OCO2C fragments are nearby coplanar. The same holds for the ladder-type tetranuclear distannoxane. The dimeric structures are also evidenced by solution NMR in non-coordinating solvents. Interestingly, the assignment of the exo and endo tin resonances of the dimeric distannoxane is unambiguous using a labeled 13CO2 experiment. The stability of the dimeric association has been probed in the stannane series on the basis of DFT calculations.

Graphical abstract: Insertion reaction of carbon dioxide into Sn–OR bond. Synthesis, structure and DFT calculations of di- and tetranuclear isopropylcarbonato tin(iv) complexes

Supplementary files

Article information

Article type
Paper
Submitted
27 Goue. 2006
Accepted
20 Gwen. 2006
First published
28 Gwen. 2006

Dalton Trans., 2006, 5167-5175

Insertion reaction of carbon dioxide into Sn–OR bond. Synthesis, structure and DFT calculations of di- and tetranuclear isopropylcarbonato tin(IV) complexes

D. Ballivet-Tkatchenko, H. Chermette, L. Plasseraud and O. Walter, Dalton Trans., 2006, 5167 DOI: 10.1039/B610812A

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