determination. The V atom in the mononuclear complex 1 is in square pyramidal coordination, and those in the dinuclear complex 2 are in octahedral coordination. Both aroylhydrazone ligands coordinate to the V atoms through the phenolate O, imino N, and enolate O atoms. The ethanol ligand in complex 1 is in terminal coordination mode, while that in complex 2 is in bridging coordination mode. The complexes function
摘要 两种氧化钒(V)配合物,[VOL 1 (OEt)] ( 1 ) 和 [V 2 O 2 (L 2 ) 2 (OEt) 2 ] ( 2 ),其中 L 1和 L 2是 2-氨基的阴离子- N' -(2-羟基亚苄基)苯甲酰肼(H 2 L 1 )和N' -(2-羟基亚苄基)-4-羟基苯甲酰肼(H 2 L 2 )分别合成并通过元素分析、红外和电子分析表征光谱和1H 核磁共振谱。通过单晶 X 射线测定进一步证实了配合物的结构。单核配合物1中的V原子为方锥配位,双核配合物2中的V原子为八面体配位。两种芳酰腙配体都通过酚 O、亚氨基 N 和烯醇 O 原子与 V 原子配位。配合物1中的乙醇配体处于末端配位模式,而配合物2中的乙醇配体处于桥接配位模式。该配合物用作有效的烯烃环氧化催化剂,过氧化氢作为末端氧化剂,碳酸氢钠作为助催化剂。
Cd(<scp>ii</scp>) coordination compounds as heterogeneous catalysts for microwave-assisted peroxidative oxidation of toluene and 1-phenylethanol
作者:Manas Sutradhar、Tannistha Roy Barman、Elisabete C. B. A. Alegria、Hugo M. Lapa、M. Fátima C. Guedes da Silva、Armando J. L. Pombeiro
DOI:10.1039/d0nj01408g
日期:——
evaluated towards the microwave (MW) assisted peroxidativeoxidation (with tert-butylhydroperoxide, TBHP) of toluene and 1-phenylethanol under heterogeneous conditions. The MW-assisted peroxidativeoxidation of toluene by a Cd(II) catalytic system is reported for the first time. At 50 °C, the 2/TBHP/MW catalytic system shows good activity for toluene oxidation with a total (benzaldehyde + benzyl alcohol)
Synthesis, spectral, magnetic, and thermal properties of Ge(IV) tetrachlorocobaltates complexes with 2-hydroxyarylaldehydes pyridinoyl(aminobenzoyl) hydrazones
作者:N. V. Shmatkova、I. I. Seifullina、V. G. Vlasenko、A. L. Trigub、S. I. Levchenkov、N. V. Khitrich
DOI:10.1134/s1070363217010170
日期:2017.1
systems has resulted in the formation of [Ge(L·H)2][CoCl4]·nCH3OH complexes with germanium chelates [Ge(L·H)2]2+ protonated at the exo chelate nitrogen atom (NPy or NH2) as the cation. The type of electrolytic dissociation and character of thermolysis of the complexes have been revealed. Spectral, thermal, and magneticproperties of the complexes have been studied.
Synthesis, spectroscopic properties and biological evaluation of transition metal complexes of salicylhydrazone of anthranilhydrazide: X-ray crystal structure of copper complex
作者:Dayananda S. Badiger、Rekha S. Hunoor、Basavaraj R. Patil、Ramesh S. Vadavi、Chandrashekhar V. Mangannavar、Iranna S. Muchchandi、Yogesh P. Patil、Munirathinam Nethaji、Kalagouda B. Gudasi
DOI:10.1016/j.ica.2011.11.063
日期:2012.4
The transitionmetalcomplexes of salicylhydrazone of anthranilhydrazide (H2L) were synthesised. The structures of metalcomplexes were characterized by various spectroscopic [IR, NMR, UV-Vis, EPR], thermal and other physicochemical methods. The single-crystal X-ray diffraction study of [Cu(HL)Cl]center dot H2O reveal its orthorhombic system with space group P2(1)2(1)2 and Z=4. The copper center has
A family of mononuclear molybdenum-(vi), and -(iv) oxo complexes with a tridentate (ONO) ligand
作者:Rupam Dinda、Parbati Sengupta、Saktiprosad Ghosh、Heike Mayer-Figge、William S. Sheldrick
DOI:10.1039/b207129k
日期:2002.11.25
reaction is reminiscent of the oxotransfer reaction from the MoO2+2 core of a molybdoenzyme to the substrate PPh3. Complexes 2 and 3 crystallized in the P21/n and P21/c space groups respectively and for both of them Z = 4. The structures clearly show that 2 and 3 have distorted octahedral coordination environments in which the Mo–O(ethanol) bond of 2 and the Mo–N (imidazole) bond of 3 are significantly longer
的水杨hydr 邻氨基苯甲酰肼(H 2 L)与MoO 2(acac)2回流反应酒类得到通式为MoO 2 L(ROH)的化合物(其中R = CH 3,C 2 H 5,nC 3 H 7,nC 4 H 9)。发现该复合物MoO 2 L(C 2 H 5 OH)与杂环碱容易反应形成MoO 2 L(Q)型复合物,其中Q =吡啶, 4-甲基吡啶, 咪唑 并取代 咪唑类。单晶X射线结构研究配体H 2 L(1)和MoO 2 L(C 2 H 5 OH)(2)和MoO 2 L(Imz)(3)的络合物表明游离配体以酮形式存在,但在两个络合物2和3中,配体通过烯醇氧,酚氧和氧与MoO 2 2+核配位偶氮甲碱 氮。MoO 2 L(C 2 H 5 OH)与PPh 3在CH 3 CN中在干燥的氮气下,不存在和存在下的反应比比,分别生产了Mo IV OL(2a)(棕色)和Mo IV OL(bipy)(2b)(绿色)以及Ph