Free methylidyne? CCC-NHC tantalum bis(imido) reactivity: protonation, rearrangement to a mixed unsymmetrical CCC-N-heterocyclic carbene/N-heterocyclic dicarbene (CCC-NHC/NHDC) pincer tantalum bis(imido) complex
Sign Up to like & getrecommendations! Published in 2018 at "Inorganica Chimica Acta"
DOI: 10.1016/j.ica.2017.08.050
Abstract: Abstract The coordination sphere of the reported (1,3-bis(3-butylimidazol-1-yl-2-idene)-2-phenylene)( tert -butylimido) CCC-NHC Ta (V) bis(imido) pincer complex 2 (Helgert et al., 2016, doi: 10.1021/acs.organomet.6b00216 ) has been observed to spontaneously rearrange to yield X-ray quality crystals… read more here.
Keywords: pincer; ccc; bis imido; ccc nhc ... See more keywords
Molybdenum(VI) bis-imido Complexes of Dipyrromethene Ligands.
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DOI: 10.1021/acs.inorgchem.0c01051
Abstract: We report the synthesis of high-valent molybdenum(VI) bis-imido complexes 1-4 with dipyrromethene (DPM) supporting ligands of the general formula (DPMR)Mo(NR')2Cl (R, R' = mesityl (Mes) or tert-butyl (tBu)). The electrochemical and chemical properties of 1-4… read more here.
Keywords: imido; molybdenum bis; imido complexes; bis imido ... See more keywords
[3 + 2] Cycloadditions and Retrocycloadditions of Niobium Imido Complexes: An Experimental and Computational Mechanistic Study.
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DOI: 10.1021/acs.inorgchem.2c00428
Abstract: We demonstrate reactivity between a β-diketiminate-supported niobium(III) imido complex and alkyl azides to form niobatetrazene complexes (BDI)Nb(NtBu)(RNNNNR) (BDI = N,N-bis(2,6-diisopropylphenyl)-3,5-dimethyl-β-diketiminate; R = cyclohexyl (1), benzyl (2)). Intriguingly, niobatetrazene complexes 1 and 2 can be interconverted… read more here.
Keywords: niobium imido; imido; cycloadditions retrocycloadditions; bis imido ... See more keywords
Computational Analysis of the Intramolecular Oxidative Amination of an Alkene Catalyzed by the Extreme π-Loading N-Heterocyclic Carbene Pincer Tantalum(V) Bis(imido) Complex
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DOI: 10.1021/acs.organomet.8b00097
Abstract: The extreme π-loading of a (CCC-NHC) pincer Ta(V) bis(imido) complex was previously reported. This complex catalyzes the cyclization of α,ω-aminoalkenes (2,2-diphenylpent-4-en-1-amine) to produce three different products in varying proportions: cyclic imine from oxidative amination (OA),… read more here.
Keywords: imido complex; oxidative amination; extreme loading; product ... See more keywords
Engendering reactivity at group 5-heteroatom multiple bonds via π-loading
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DOI: 10.1039/d2sc02706b
Abstract: In this Perspective, we discuss the strategy of π-loading, i.e., coordination of two or more strongly π-donating ligands to a single metal center, as it applies to promoting reactivity at group 5 transition metal-imido groups.… read more here.
Keywords: imido; bis imido; group; reactivity group ... See more keywords