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Updated: Jul 11, 2025

Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Diverse Post-Metathesis Reactivities of Mixed Amido-Isothiocyanato Molybdenum Complexes
Dinh Cao Huan Do1, Nemanja Đorđević1, Han Vinh Huynh1
1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Abstract:
Attempts to prepare mixed isothiocyanato-bis(imido) MoVI complexes led to the discovery of post-metathesis rearrangements toward three distinct products (1-3), which feature the NCS-derived chelators [N(NMe2)CS]2- (L in dinuclear 1 and 2) and [N(SiMe3)(NMe2)CS]- (L in mononuclear 3). Notably, the preparation of bidentate ligand L and its coordination chemistry are unprecedented. Together with computational studies, it is proposed that the putative "mono-substituted" intermediate [Mo(NBu)2(NMe2)(NCS)] serves as the common starting point for the observed molecular transformations. Construction of the [Mo(NBu)2(NCS)2] core was ultimately possible in the presence of additional stabilizing donors (THF or PMe3), which yielded the complexes [Mo(NBu)2(NCS)2(THF)2] (4) and [Mo(NBu)2(NCS)2(PMe3)2] (5).
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