Linearly Bridging N<sub>2</sub> versus CO: Chemical Bonding and Spin‐Controlled Reactivity.

نویسندگان

چکیده

The synthesis of the linearly N2 bridged, dichromium complex [(μ-N2){Cr(PNP)}2] (PNP=N(CHCHPtBu2)2) is reported. Experimental and computational data favor a three-spin electronic structure model with high-spin CrII ions that are antiferromagnetically coupled to an N22− bridge due spin-polarized backbonding. Reaction CO gave isocarbonyl [(PNP)(CO)2Cr(μ-CO)Cr(PNP)] [(PNP)(CO)2Cr(μ-N2)Cr(PNP)] could be trapped as intermediate. latter best described by (ls-CrI)(N2−)(hs-CrII) ground state model, while more covalent bonding reflected (ls-Cr0)(CO0)(hs-CrII) description. selectivity carbonylation reaction attributed spin transition after binding first ligand [(μ-N2){Cr(PNP)}2].

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ژورنال

عنوان ژورنال: European Journal of Inorganic Chemistry

سال: 2023

ISSN: ['1434-1948', '1099-0682']

DOI: https://doi.org/10.1002/ejic.202300011