- PII
- 10.31857/S0132344X23700214-1
- DOI
- 10.31857/S0132344X23700214
- Publication type
- Status
- Published
- Authors
- Volume/ Edition
- Volume 49 / Issue number 4
- Pages
- 217-228
- Abstract
- The reactions of annulated 1,4-dichloro-3a,6a-diaza-1,4-diphosphapentalenes (DDPCl2) with 1 equiv. of trimethylsilyl triflate (TMSOTf) lead to replacement of one chlorine atom with the triflate group, thus giving cationic diazadiphosphapentalenes [ClDDP]+[TfO]−. In the presence of 2 equiv. of TMSOTf and 2 equiv. of 4‑dimethylaminopyridine (DMAP), the DDP dication stabilized by two DMAP molecules, [DDP(DMAP)2]2+[(CF3SO3)−]2, is formed. The DMAP molecules are located on one side of the DDP skeleton and lie in parallel planes. Free diazadiphosphapentalene was detected in solutions of [DDP(DMAP)2]2+[(CF3SO3)−]2 in CH2Cl2 by UV-Vis spectroscopy and CV. This implies that this compound disproportionates under these conditions; it is unstable in dilute solutions and decomposes to give [DMAP∙HOTf] in a quantitative yield. Crystallographic data for the obtained compounds: CCDC nos. 2182881–2182883.
- Keywords
- диазадифосфапенталены диазафосфолы двухкоординированный фосфор катионы фосфения
- Date of publication
- 01.04.2023
- Year of publication
- 2023
- Number of purchasers
- 0
- Views
- 13
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