Dimeric Pd(II) and Pt(II) chloride organometallics with 2-phenylpyridine and their solvolysis in dimethylsulfoxide
| Authors | |
|---|---|
| Year of publication | 2014 |
| Type | Article in Periodical |
| Magazine / Source | Journal of Organometallic Chemistry |
| MU Faculty or unit | |
| Citation | |
| web | DOI: 10.1016/j.jorganchem.2014.02.016 |
| Doi | http://dx.doi.org/10.1016/j.jorganchem.2014.02.016 |
| Field | Inorganic chemistry |
| Keywords | palladium; platinum; solvolysis; low-temperature NMR spectroscopy; relativistic DFT calculations; cluster model |
| Attached files | |
| Description | Pd(II) and Pt(II) chloride organometallics with the deprotonated, N(1), C(2’)-chelating form of 2-phenylpyridine (2ppy*), i.e. [Pd(2ppy*)(Cl)]2 (1) and [Pt(2ppy*)(Cl)]2 (2), were studied by 1H, 13C, 15N, and 195Pt NMR in DMF-d7 and by 15N CP/MAS in the solid state. Both dimers immediately decompose in DMSO-d6, however, the products of this process are entirely different for 1 and 2. The cleavage of 1 is unusual among all described [M(2ppy*)(X)]2 dimeric compounds as it yields, most likely, the [Pd(2ppy*)(DMSO-d6)2]+ [Pd(2ppy*)Cl2] ionic pair, whereas 2 is known to undergo a more classical conversion into trans(S,N)-[Pt(2ppy*)(DMSO-d6)Cl]. The conclusions formulated for the above ionic pair were supported by quantum-chemical NMR calculations, calibrated specifically for this class of compounds (geometry optimization tested on molecular cluster, calibration of exact-exchange admixture in the PBE0 functional). The proposed computational approach is shown to be valid and suitable also for similar systems. |
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