Synthesis, characterization and use of imidazole and methyl-pyrazole based pyridine ligands as extractants for nickel(II) and copper(II)
作者:Brendan H. Pearce、Hezron F.O. Ogutu、Waheed Saban、Robert C. Luckay
DOI:10.1016/j.ica.2019.02.020
日期:2019.5
solvent extraction of only Ni(II) in the absence of synergist produced values from 3% to 15% and values between 69% and 79% with synergist. The competitive extraction of metalions from a base metalion mix (Co2+, Ni2+, Zn2+, Cu2+, Pb2+ and Cd2+) produced extraction values of 15%−87% extraction of different metalions with synergist. Finally, time dependent extraction studies with Ni(II) showed that
摘要这项工作包括合成七个基于吡啶的配体,2-(3-丁基-1H-吡唑-5-基)-吡啶(1),2- [3-(叔丁基)-1H-吡唑-5 -基]-吡啶(2),2-(3-辛基-1H-吡唑-5-基)-吡啶(3),2-(1-辛基-1H-咪唑-2-基)吡啶(4), 2-[((1H-吡唑-1-基)甲基]吡啶(5),2-[((3,5-二甲基-1H-吡唑-1-基)甲基]吡啶(6)和2-[(3-甲基-1H-吡唑-1-基)甲基]吡啶(7)。在大多数情况下,我们修改了一些路线并提高了产量。适当地使用1 H和13 C NMR,红外(IR)光谱,质谱(ms),元素分析(EA)和熔点对配体进行了全面表征。我们设法生长了2-[((1H-吡唑-1-基)甲基]吡啶高氯酸铜(II)络合物的单晶,并使用单晶X射线衍射解决了该结构。围绕铜(II)中心的配位是伪正方形平面,具有两个与金属离子配位的配体。迹象表明,使用该配体对铜(II)的
Structural and Magnetic Properties of Three One-Dimensional Azido-Bridged Copper(II) and Manganese(II) Coordination Polymers
作者:En-Qing Gao、Shi-Qiang Bai、Chuan-Feng Wang、Yan-Feng Yue、Chun-Hua Yan
DOI:10.1021/ic034618w
日期:2003.12.1
one-dimensional (1D) azido-bridged coordination polymers of formula [Cu(L)(N3)2]n (1), [Cu2(Me-L)(N3)4]n (2), and [Mn(L)(N3)2]n (3) have been synthesized and structurally characterized, and their magnetic properties studied, where L and Me-L are 2-(pyrazol-1-ylmethyl)pyridine and 2-(3-methylpyrazol-1-ylmethyl)pyridine, respectively. Compound 1 consists of 1D chains in which the Cu(II) ions with a square pyramidal
Here we designed and synthesized a NN–CoII bidentate complex and efficiently used it for general and expedient amination of alcohols under benign, solventlessconditions. Both primary (including unactivated aliphatic) alcohols and sterically hindered secondary alcohols exhibited very good reactivity and provided diverse amines with good substrate scope (88 examples; up to 95% yields) and excellent
3-AMINO-PYRAZOLE DERIVATIVES USEFUL AGAINST TUBERCULOSIS
申请人:Glaxo Group Limited
公开号:EP2627653B1
公开(公告)日:2014-12-24
Halo-bridged Cu(II) complexes with pyridine–pyrazole ligands: Influence of halogen and ligand lipophilicity on antimicrobial activity
作者:Venugopalsamy J. Tamilpriyai、Palaniyappan Nagarasu、Karnan Singaravelu Dharshini、Premnath Dhanaraj、Anbazhagan Veerappan、Dohyun Moon、Savarimuthu Philip Anthony、Vedichi Madhu
DOI:10.1016/j.molstruc.2023.136414
日期:2023.12
of copper complexes. The lipophilicity of ligands was regulated by number of methyl substituents on the ligands. The chloro bridged copper complexes exhibited relatively higher antibacterial activity compared to the bromo bridged copper complexes. Thus, the present structure-activity of simple copper complexes might provide insight on the structural design of new antimicrobial agents based on coordination