Abstract
The synthesis and characterization of a homologous series of T-shaped {MNO}10 nitrosyl complexes of the form [M(PR3)2(NO)]+ (M = Pd, Pt; R = tBu, Ad) are reported. These diamagnetic nitrosyls are obtained from monovalent or zerovalent precursors by treatment with NO and NO+, respectively, and are notable for distinctly bent M–NO angles of ∼123° in the solid state. Adoption of this coordination mode in solution is also supported by the analysis of isotopically enriched samples by 15N NMR spectroscopy. Effective oxidation states of M0/NO+ are calculated, and metal–nitrosyl bonding has been interrogated using DFT-based energy decomposition analysis techniques. While a linear nitrosyl coordination mode was found to be electronically preferred, the M–NO and P–M–P angles are inversely correlated to the extent that binding in this manner is prevented by steric repulsion between the bulky ancillary phosphine ligands.
Original language | English |
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Pages (from-to) | 1709-1713 |
Number of pages | 5 |
Journal | Inorganic Chemistry |
Volume | 63 |
Issue number | 4 |
DOIs | |
Publication status | Published - 11 Jan 2024 |
Bibliographical note
Funding Information:We gratefully acknowledge funding from the EPSRC (DTP studentship to M.J.G.S.), EUTOPIA alliance (cotutelle studentship to N.R.), European Research Council (grant agreement 637313; M.R.G, A.B.C.), Vrije Universiteit Brussel (M.A.), and Royal Society (UF100592, UF150675; A.B.C). Crystallographic data were collected using an instrument that received funding from the ERC under the European Union’s Horizon 2020 research and innovation programme (grant agreement No. 637313). Tier2 computational resources and services were provided by the Shared ICT Services Centre funded by the VUB, the Flemish Supercomputer Center (VSC) and FWO.
Publisher Copyright:
© 2024 The Authors. Published by American Chemical Society.