Synthesis, structures, characterizations and catalytic behaviors for hydrogen evolution of copper(II) and copper(I) complexes supported by diiminodiphosphines
作者:Hao Yang、Juan Du、Chun-Li Wang、Shu-Zhong Zhan
DOI:10.1016/j.inoche.2021.108719
日期:2021.8
N’-bis[o-(diphenylphosphino)benzylidene]ethylenediamine (en-P2) with Cu(ClO4)2 or CuClO4 afford two complexes, [CuII-en-P2(NCMe)](ClO4)2 1 and [CuI-en-P2]ClO4 2, respectively, which have been characterized by several physico-chemical and spectroscopic methods. The copper atom is five, and four-coordinated in the coppercomplexes 1 and 2, respectively. At room temperature, en-P2 shows photoluminescence at 420 and
N,N'-双[o-(二苯基膦)亚苄基]乙二胺(en-P 2 )与Cu(ClO 4 ) 2或CuClO 4 的反应得到两种配合物,[Cu II -en-P 2 (NCMe)]( ClO 4 ) 2 1和[Cu I -en-P 2 ]ClO 4 2分别已通过多种物理化学和光谱方法表征。铜原子在铜配合物1和2中分别是5和4配位的。在室温下,en-P 2在 420 和 560 nm 处显示光致发光,然而,添加 Cu 2+或 Cu + 分别导致在 420 和 560 nm 处的峰值强度降低。对于磁性的行为的调查表明,在冷却时从300至2 K时,χ中号两者铜t值络合物1和2稳步增加。此外,电化学研究表明,配合物1和配合物2都具有从乙酸或水中析氢的电催化活性,配合物1显示出比配合物2更有效的活性。
HYDROGENATION OF ESTERS WITH RU/TETRADENTATE LIGANDS COMPLEXES
申请人:SAUDAN Lionel
公开号:US20080071098A1
公开(公告)日:2008-03-20
The present invention relates to the field of catalytic hydrogenation and, more particularly, to the use of Ru complexes with tetradentate ligands having at least one amino or imino coordinating group and at least one phosphino coordinating group in hydrogenation processes for the reduction of esters or lactones into the corresponding alcohol or diol respectively.
Synthesis and characterization of iron(2+) and ruthenium(2+) diimino-, diamino- and diamido-diphosphine complexes. X-ray crystal structure of trans-RuCl2(P2N2C2H4) ∗d CHCl3
作者:Jing-Xing Gao、Hui-Lin Wan、Wai-Kwok Wong、Man-Chung Tse、Wing-Tak Wong
DOI:10.1016/0277-5387(95)00385-1
日期:1996.4
acetonitrile gave trans-[Fe(P2N2C2(CH3CN)2](ClO4)2 (VI) and trans-[Fe(P2N2C2H4)(CH3CN)2](ClO4)2 (VII), respectively. Interaction of FeCl2 ∗d 4H2O with one equivalent of N,N′-bis[o-(diphenylphosphino)benzylidene]-1,6-diaminohexane (P2N2C6) in refluxing gave trans-FeCl2(P2N2C6) (VIII). Complexes I–VIII have been fully characterized by analytical and spectroscopic methods. The structure of IV has been established
Ru(OAc)2(Ph 3 P)2与一当量的N,N'-双[ o-(二苯基膦基)亚苄基]乙二胺(P 2 N 2 C 2)在回流二氯甲烷中的相互作用得到反式-Ru(OAc )2(P 2 N 2 C 2)* d 2H 2 O(I),产率中等(63%);在回流甲苯中,得到红色固体,其在CHCl 3中重结晶后得到反式-RuCl 2(P 2 N2 C 2)* d 2H 2 O(II),收率良好(92%)。通过RuCl 2(DMSO)4与一当量的P 2 N 2 C 2在回流的甲苯中的相互作用,还可以高收率(85%)制备化合物II。的RuCl的相互作用2(DMSO)4与一个当量的Ñ,Ñ '双[ ø - (二苯基膦基)亚苄基] -1,3-二氨基丙烷(P 2 Ñ 2 Ç 3),Ñ,Ñ '双[ Ò-d(二苯基膦基)苄基]乙二胺(P 2 N 2 C 2 H 4)和N,N′-双[邻-(二苯基膦基)苯甲酰胺基]乙烷(P
Versatile coordinating abilities of acyclic N<sub>4</sub> and N<sub>2</sub>P<sub>2</sub> ligand frameworks in conjunction with Sn[N(SiMe<sub>3</sub>)<sub>2</sub>]<sub>2</sub>
作者:Ravindra K. Raut、Padmini Sahoo、Dipti Chimnapure、Moumita Majumdar
DOI:10.1039/c9dt00617f
日期:——
monocation 4 has been obtained from the reactionbetween 1 and trimethylsilyl trifluoromethane sulfonate. A 1 : 1 stoichiometric reactionbetween L3 and Sn[N(SiMe3)2]2 led to the isolation of a dimeric monostannylene 5 having a step-like structure with a Sn2N2 central ring. The reaction of L2 with Sn[N(SiMe3)2]2 underwent an electron transfer reaction ultimately leading to bis(α-iminopyridine) isolation.
Synthesis, structure and catalytic activity of ruthenium diaminodiphosphine complexes
作者:Wai-Kwok Wong、Xiao-Ping Chen、Jian-Ping Guo、Yong-Gui Chi、Wei-Xiong Pan、Wai-Yeung Wong
DOI:10.1039/b106997g
日期:2002.3.8
The reaction of N,N′-bis[o-(diphenylphosphino)benzylidene]-1,2-diaminoethane (L2) with one equivalent of RuCl2(PPh3)3 in dichloromethane at room temperature gave trans-RuCl2(PPh3)(κ3-L2) 2 in high yield. When refluxed in toluene in air, 2 was converted quantitatively to trans-RuCl2(κ4-L2) 3. When treated with one equivalent of hydrogen peroxide in chloroform, 2 was oxidized to trans-RuCl2(PPh3)(κ3-L3) 4, in which the pendant phosphine has been oxidized to a phosphine oxide. Complex 4 can be further
oxidized with another equivalent of hydrogen peroxide to trans-RuCl2(PPh3)(κ3-L4) 5, in which the amino group trans to PPh3 has been oxidized to an imino group. When treated with excess hydrogen peroxide in ethanol, 3 was oxidized to trans-RuCl2(κ4-L5) 6, in which the diamino moiety [–N(H)CH2CH2N(H)–] has been oxidized to a conjugated diimino moiety (–NCHCHN–). The solid-state structures of 2, 4, 5 and 6 were ascertained by X-ray crystallography. Catalytic studies show that 2
is an effective catalyst for the oxidation of alkanes, alkenes and alcohols with air or tert-butyl hydroperoxide. Experimental evidence suggests that free radicals are probably involved in the catalytic oxidation processes.