1319736-30-5Relevant articles and documents
Synthesis, structure and dioxygen reactivity of Ni(II) complexes with mono-, bis-, tetra- and hexa-oxime ligands
Boyko, Yaroslav D.,Sukhorukov, Alexey Yu.,Semakin, Artem N.,Nelyubina, Yulia V.,Ananyev, Ivan V.,Rangappa,Ioffe, Sema L.
, p. 24 - 33 (2014)
Four nickel complexes with β-(oximinoalkyl)amine ligands Ox nHn containing one (Ox1H1), two (Ox2H2), four (Ox4H4) and six (Ox6H6) oxime groups were synthesized and characterized by elemental analysis, FTIR, HRMS and single crystal X-ray diffraction. β-Oximinoalkylamines OxnHn act as polydentate ligands forming five-membered chelate rings, in which nickel is coordinated with both amine and oxime nitrogen atoms. In all structurally characterized complexes, OH-groups of oximes arms are involved in hydrogen bonding with counterions (Cl-), which are located in the inner or outer coordination sphere of the nickel atom. Two new structural types of pseudo-octahedral Ni(II) β-oximinoalkylamine complexes containing two ligands per one nickel ion (Ni(Ox1H1)2Cl2 and Ni(Ox 2H2)2Cl2) were identified. Dioxygen reactivity of the obtained complexes in aerobic oxidation of triphenylphosphine was studied. Bis-oxime complex Ni(Ox2H2) 2Cl2 was found to be the most active promoter of triphenylphosphine oxidation among the synthesized nickel complexes.
