Synthesis, stability and structural characterization of a new macrocyclic ligand with four neutral pendent groups: 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclo dodecane (L) and its Co and Cu complexes

doi:10.1016/S0020-1693(02)01065-4

	Synthesis, stability and structural characterization of a new macrocyclic ligand with four neutral pendent groups: 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclo dodecane (L) and its Co and Cu complexes
	Kong, DY ; Huang, XY ; Xie, YY
刊名	INORGANICA CHIMICA ACTA
	2002-11-25
卷号	340 页码:133-138
关键词	cobalt copper tetraazamacrocyclic ligand stability constants X-ray structures
ISSN号	0020-1693
DOI	10.1016/S0020-1693(02)01065-4
文献子类	Article
英文摘要	Two new divalent metal complexes of general formula: M(NO3)(2)(L)nH(2)O [M = Co (1), n = 0; M = Cu (2), n = 2] which coordinated to a new macrocyclic ligand, 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclododecane (L) have been synthesized and characterized structurally by X-ray diffraction. In complex 1, the central Co atom coordinately bonds to four nitrogen atoms of the macrocyclic ligand and two oxygen atoms of a nitrate anion, to form a slightly distorted octahedron. X-ray diffraction indicated that the bonds lengths of Co-N(1) and Co-N(2) are 2.212(7), 2.230(7) Angstrom, respectively. Bond lengths between Co and two oxygen atoms are the same: Co-O(1) 2.142(7) Angstrom. In complex 2 four nitrogen atoms of macrocyclic ligand coordinated to copper atom together with an oxygen atom from water molecule, which defined a five-coordinated tetragonal pyramid. The distances between Cu and nitrogen atoms are Cu-N(1) 2.020(7) Angstrom and Cu-N(2) 2.030(6) Angstrom, respectively. The bond length of Cu-O(1) is 2.126(6) Angstrom. Potentiometric measurements were determined in 1,4-dioxane-water for L, Co and Cu complexes with the formation constants: log K[ML] = 19.79 for Co and 15.61 for Cu. (C) 2002 Elsevier Science B.V. All rights reserved.
WOS关键词	COBALT(II)
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000179283000019
内容类型	期刊论文
源URL	[http://119.78.100.183/handle/2S10ELR8/274307]
专题	中国科学院上海药物研究所
通讯作者	Kong, DY
作者单位	1.Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA 2.Shanghai Inst Mat Med, Shanghai 200031, Peoples R China 3.Rutgers State Univ, Dept Chem, Camden, NJ 08102 USA
推荐引用方式 GB/T 7714	Kong, DY,Huang, XY,Xie, YY. Synthesis, stability and structural characterization of a new macrocyclic ligand with four neutral pendent groups: 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclo dodecane (L) and its Co and Cu complexes[J]. INORGANICA CHIMICA ACTA,2002,340:133-138.
APA	Kong, DY,Huang, XY,&Xie, YY.(2002).Synthesis, stability and structural characterization of a new macrocyclic ligand with four neutral pendent groups: 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclo dodecane (L) and its Co and Cu complexes.INORGANICA CHIMICA ACTA,340,133-138.
MLA	Kong, DY,et al."Synthesis, stability and structural characterization of a new macrocyclic ligand with four neutral pendent groups: 1,4,7,10-tetrakisbenzyl-1,4,7,10-tetraazacyclo dodecane (L) and its Co and Cu complexes".INORGANICA CHIMICA ACTA 340(2002):133-138.