Insertion reactions of CO2, OCS, and CS2 into the Sn-N bonds of (Me2N)2Sn: NMR and X-ray structural characterization of the products |
| |
| Authors: | Constantine A Stewart Yongjun Tang |
| |
| Institution: | a Advanced Materials Laboratory, Sandia National Laboratories, Albuquerque, NM 87106, USA
b Department of Chemistry, University of New Mexico, Albuquerque, NM 87131, USA |
| |
| Abstract: | The interactions of the heteroallenes CO2, OCS, and CS2 with (Me2N)2Sn have been investigated. These CX2 species insert into the Sn-N bonds under mild conditions to provide products bis-(N,N-dimethylcarbamato)tin(II), (Me2NCO2)2Sn]2, bis-(N,N-dimethylthiocarbamato)tin(II), Me2NC(O)S]2Sn and bis-(N,N-dimethyldithiocarbamato)tin(II), (Me2NCS2)2Sn. These molecules have been fully characterized by traditional spectroscopic methods as well as by X-ray crystallography. The Me2NC(O)S]2Sn product is the first example of a structurally characterized Sn(II) thiocarbamate. The solid-state structures of the final products vary depending on the heteroallene inserted. The CO2-inserted product is dimeric in the solid-state, with both bridging and chelating carbamate ligands. These dimers form a chain-like network via intermolecular Sn?O interactions. The monomeric thiocarbamate also shows a chain-like extended structure, through both Sn?O and Sn?S interactions, while the dithiocarbamate product has no significant intermolecular contacts. |
| |
| Keywords: | Tin(II) complexes CO2 insertion Carbamate Thiocarbamate Dithiocarbamate X-ray structure |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
