ortho-Phenylene-bridged phosphorus/silicon Lewis pairs
| Autor: | Lucas Wickemeyer, Jan Schwabedissen, Pia C. Trapp, Beate Neumann, Hans-Georg Stammler, Norbert W. Mitzel |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Dalton Transactions. 52:2611-2618 |
| ISSN: | 1477-9234 1477-9226 |
| DOI: | 10.1039/d2dt04097b |
| Popis: | A series of five ortho-phenylene-bridged phosphorus-silicon Lewis pairs was synthesized, with phosphorus bearing isopropyl groups while the substituents at the silicon atom vary (-CH3, -Cl, -F). Possible interactions between Lewis acid and base were investigated both experimentally (NMR, XRD) and theoretically to determine the influence of the different substituents. Calculated ortho-interaction energies (OIEs) show a stabilizing interactions between the acidic and basic units which were also found for the meta- and para-interaction energies (MIEs and PIEs, respectively), indicating stabilization resulting not from direct acid-base interaction but from electronic interactions through the ring. Further spectroscopic (NMR, XRD) and theoretical (NBO, QTAIM, SAPT) investigations confirmed the absence of direct interactions between silicon and phoshorus. |
| Databáze: | OpenAIRE |
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