Synthesis, structure and dioxygen reactivity of Ni(II) complexes with mono-, bis-, tetra- and hexa-oxime ligands
摘要:
Four nickel complexes with beta-(oximinoalkyl)amine ligands Ox(n)H(n) containing one (Ox(1)H(1)), two (Ox(2)H(2)), four (Ox(4)H(4)) and six (Ox(6)H(6)) oxime groups were synthesized and characterized by elemental analysis, FTIR, HRMS and single crystal X-ray diffraction. beta-Oximinoalkylamines Ox(n)H(n) 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) beta-oximinoalkylamine complexes containing two ligands per one nickel ion (Ni(Ox(1)H(1))(2)Cl-2 and Ni(Ox(2)H(2))(2)Cl-2) were identified. Dioxygen reactivity of the obtained complexes in aerobic oxidation of triphenylphosphine was studied. Bis-oxime complex Ni(Ox(2)H(2))(2)Cl-2 was found to be the most active promoter of triphenylphosphine oxidation among the synthesized nickel complexes. (C) 2014 Elsevier Ltd. All rights reserved.
Synthesis, structure and dioxygen reactivity of Ni(II) complexes with mono-, bis-, tetra- and hexa-oxime ligands
摘要:
Four nickel complexes with beta-(oximinoalkyl)amine ligands Ox(n)H(n) containing one (Ox(1)H(1)), two (Ox(2)H(2)), four (Ox(4)H(4)) and six (Ox(6)H(6)) oxime groups were synthesized and characterized by elemental analysis, FTIR, HRMS and single crystal X-ray diffraction. beta-Oximinoalkylamines Ox(n)H(n) 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) beta-oximinoalkylamine complexes containing two ligands per one nickel ion (Ni(Ox(1)H(1))(2)Cl-2 and Ni(Ox(2)H(2))(2)Cl-2) were identified. Dioxygen reactivity of the obtained complexes in aerobic oxidation of triphenylphosphine was studied. Bis-oxime complex Ni(Ox(2)H(2))(2)Cl-2 was found to be the most active promoter of triphenylphosphine oxidation among the synthesized nickel complexes. (C) 2014 Elsevier Ltd. All rights reserved.
A first general approach to the synthesis of unsymmetrically substituted tris(β-oximinoalkyl)amines containing two or three different β-oximinoalkyl fragments has been developed. This procedure employs available aliphatic nitro compounds as starting building blocks and their silylation as the key step. This approach provides an efficient strategy for the diversity-oriented synthesis of 1,4,6,10-tetraazaadamantane
Polymerisation catalyst system based on dioxime ligands
申请人:TOTAL PETROCHEMICALS RESEARCH FELUY
公开号:EP1746111A1
公开(公告)日:2007-01-24
The present invention discloses active oligomerisation and polymerisation catalyst systems based on dioxime ligands.
本发明公开了基于二恶英配体的活性低聚物和聚合催化剂体系。
Polymerisation Catalyst System Based on Monooxime Ligands
申请人:Boulanger Louis
公开号:US20080249266A1
公开(公告)日:2008-10-09
The present invention discloses active oligomerisation and polymerisation catalyst systems based on dioxime ligands.
[EN] POLYMERISATION CATALYST SYSTEM BASED ON DIOXIME LIGANDS<br/>[FR] SYSTEME DE CATALYSE DE POLYMERISATION BASE SUR DES LIGANDS DE DIOXIME
申请人:TOTAL PETROCHEMICALS RES FELUY
公开号:WO2007009977A1
公开(公告)日:2007-01-25
[EN] The present invention discloses active oligomerisation and polymerisation catalyst systems based on dioxime ligands. [FR] La présente invention concerne des systèmes de catalyseurs actifs de polymérisation et d'oligomérisation reposant sur des ligands de dioxime.
Synthesis, structure and dioxygen reactivity of Ni(II) complexes with mono-, bis-, tetra- and hexa-oxime ligands
作者:Yaroslav D. Boyko、Alexey Yu. Sukhorukov、Artem N. Semakin、Yulia V. Nelyubina、Ivan V. Ananyev、K.S. Rangappa、Sema L. Ioffe
DOI:10.1016/j.poly.2014.01.003
日期:2014.3
Four nickel complexes with beta-(oximinoalkyl)amine ligands Ox(n)H(n) containing one (Ox(1)H(1)), two (Ox(2)H(2)), four (Ox(4)H(4)) and six (Ox(6)H(6)) oxime groups were synthesized and characterized by elemental analysis, FTIR, HRMS and single crystal X-ray diffraction. beta-Oximinoalkylamines Ox(n)H(n) 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) beta-oximinoalkylamine complexes containing two ligands per one nickel ion (Ni(Ox(1)H(1))(2)Cl-2 and Ni(Ox(2)H(2))(2)Cl-2) were identified. Dioxygen reactivity of the obtained complexes in aerobic oxidation of triphenylphosphine was studied. Bis-oxime complex Ni(Ox(2)H(2))(2)Cl-2 was found to be the most active promoter of triphenylphosphine oxidation among the synthesized nickel complexes. (C) 2014 Elsevier Ltd. All rights reserved.