Oxidative addition of cyanogen bromide to C,N-chelated and Lappert's stannylenes

0542067 - ÚMCH 2022 RIV GB eng J - Journal Article
Švec, P. - Samsonov, M. A. - Růžičková, Z. - Brus, Jiří - Růžička, A.
Oxidative addition of cyanogen bromide to C,N-chelated and Lappert's stannylenes.
Dalton Transactions. Roč. 50, č. 16 (2021), s. 5519-5529. ISSN 1477-9226. E-ISSN 1477-9234
R&D Projects: GA MŠMT(CZ) LTAUSA18011
Research Infrastructure: e-INFRA CZ - 90140
Institutional support: RVO:61389013
Keywords : physical-properties * metal alkyls * amides
OECD category: Inorganic and nuclear chemistry
Impact factor: 4.569, year: 2021
Method of publishing: Limited access
https://pubs.rsc.org/en/content/articlelanding/2021/DT/D1DT00704A#!divAbstract

Stannylenes of L2Sn type bearing either C,N-chelating (1, L = LCN = 2-(N,N-dimethylaminomethyl)phenyl) or bulky amido (2, L = LN = N(SiMe3)2) ligands react with cyanogen bromide (Br–C[triple bond, length as m-dash]N) via an oxidative-addition reaction to give monomeric six-coordinate (LCN)2Sn(Br)CN (1a) and four-coordinate (LN)2Sn(Br)CN (2a) stannanes in moderate yields. In solution, both 1a and 2a undergo instantaneous bromido-cyanido ligand redistribution reactions, leading to mixtures containing 1a, (LCN)2SnBr2 (1b) and (LCN)2Sn(CN)2 (1c) or 2a, (LN)2SnBr2 (2b) and (LN)2Sn(CN)2 (2c), respectively. The prepared species were characterised by multinuclear NMR spectroscopy in solution (1a–c and 2a–c) and in the solid state (1a–c). The crystal structures of 1a/b/c, 2a/b/c and sole 2b were determined by XRD analyses. DFT calculations and QTAIM analysis were also carried out to corroborate the experimental results.
Permanent Link: http://hdl.handle.net/11104/0319791