Bridging Titanium Nitrido Complexes Containing A Linear Ti-N-Ti Core with A Two-Coordinate Nitrido Ligand.

Autor: Okumura A; Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany., Ghana P; Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.; Department of Chemistry, Indian Institute of Technology Gandhinagar, 382355, Gujarat, Gandhinagar, India., Spaniol TP; Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany., Okuda J; Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2024 Sep 25; Vol. 30 (54), pp. e202402390. Date of Electronic Publication: 2024 Sep 12.
DOI: 10.1002/chem.202402390
Abstrakt: A series of titanium μ 2 -nitrido complexes supported by the triamidoamine ligand Xy-N 3 N (Xy-N 3 N={(3,5-Me 2 C 6 H 3 )NCH 2 CH 2 } 3 N 3- ) is reported. The titanium azido complex [(Xy-N 3 N)TiN 3 ] (1-N 3 ), prepared by salt metathesis of the chloride complex [(Xy-N 3 N)TiCl] (1-Cl) with NaN 3 , reacted with lithium metal or with alkali metal naphthalenides (alkali metal M=Na, K, and Rb) in THF to give the corresponding dinuclear μ 2 -nitrido complexes M[(Xy-N 3 N)Ti=N-Ti(Xy-N 3 N)] (2-M; M=Li, Na, K, Rb). Single crystal X-ray diffraction studies of 2-Li, 2-Na, and 2-K revealed alkali metal dependent structures in the solid state. While 2-Li and 2-K contain a μ 2 -nitrido ligand with a linear Ti-N-Ti core, 2-Na includes a μ 3 -nitrido ligand as part of a T-shape Ti 2 NaN fragment with the sodium cation weekly coordinated to the nitrido nitrogen atom. When the synthesis of the nitrido complexes was carried out in the presence of excess alkali metals, decomposition of the nitrido complexes was observed affording some intractable titanium species along with the trialkali metal salts [M 3 (Xy-N 3 N)] (3-M) (M=Li, Na, K, and Rb). These salts were also prepared by deprotonation of (Xy-N 3 N)H 3 with the corresponding alkali metal hexamethyldisilazide and characterized by multinuclear NMR spectroscopy as well as single crystal X-ray diffraction.
(© 2024 The Author(s). Chemistry - A European Journal published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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