6957-24-0Relevant articles and documents
Hydrazine-mediated strongly coupled Re(CO)3 dimers
Hasheminasab,Rhoda,Crandall,Ayers,Nemykin,Herrick,Ziegler
, p. 17268 - 17277 (2015)
Dimeric metal complexes can often exhibit coupling interactions via bridging ligands. In this report, we present two Re(CO)3 dimers, where the metals are linked via a bis(pyca) hydrazine (pyca = pyridine-2-carbaldehyde imine) Schiff base ligand. For the dimeric compounds 4 and 5, we observe strong coupling across the dimer as measured by cyclic voltammetry: ～480 mV separations between the first and the second reduction waves that correspond to comproportionation constants close to 1.5 × 108. Evidence for a mixed valence state upon one electron reduction was also observed by spectroelectrochemistry in which a clear inter-valence charge-transfer (IVCT) band was observed in [4]- and [5]-complexes. The electronic structures of all target compounds were probed by DFT and TDDFT computational methods. DFT calculations indicate that reduction takes place at the diimine units, and that the observed coupling is a ligand-based phenomenon, rather than one that involves metal-based orbitals.
Oxidized multiwalled nanotubes as efficient carbocatalyst for the general synthesis of azines
Agnoli, Stefano,Alemán, José,Blanco, Matías,Fraile, Alberto,Valle-Amores, Miguel A.
, p. 174 - 183 (2022/02/02)
The carbocatalytic synthesis of azines (N-N linked diimines) by mild-oxidized multiwalled carbon nanotubes catalyst (oxMWNT) is presented. The material, just with a 5 %wt. loading, is able to carry out a smooth room-temperature metal-free condensation of
Ruthenium(ii)-catalysed 1,2-selective hydroboration of aldazines
Gunanathan, Chidambaram,Pradhan, Subham,Thiyagarajan, Subramanian
supporting information, p. 7147 - 7151 (2021/08/30)
Herein, an efficient and simple catalytic method for the selective and partial reduction of aldazines using ruthenium catalyst [Ru(p-cymene)Cl2]2 (1) has been accomplished. Under mild conditions, aldazines undergo the addition of pinacolborane in the presence of a ruthenium catalyst, which delivered N-boryl-N-benzyl hydrazone products. Notably, the reaction is highly selective, and results in exclusive mono-hydroboration and desymmetrization of symmetrical aldazines. Mechanistic studies indicate the involvement of in situ formed intermediate [{(η6-p-cymene)RuCl}2(μ-H-μ-Cl)] (1a) in this selective hydroboration.
A double-nuclear manganese complex catalytic synthesis method to generate n-hydroxymethyl compound (by machine translation)
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Paragraph 0033; 0034, (2018/12/02)
Binuclear manganese complex catalytic synthesis method to generate n-hydroxymethyl compound, under the protection of nitrogen, will be double-nuclear manganese complex catalyst potassium butanol and tertiary butyl alcohol is dissolved at room temperature
