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Copper(II) and Nickel(II) Complexes of N,N',N'',N'''-Tetrakis(2-aminoethyl)-1,4,7,11-tetra-azacyclotetradecane (taei), -1,4,8,12-tetra-azacyclopentadecane (taep), and -1,5,9,13-tetra-azacyclohexadecane (taeh). Crystal Structures of 4, and 4, and ....

DOI: 10.1039/DT9900002763

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 2763 - 2769 (1990)

Update date:2022-08-16

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Authors:

Murase, IchiroMurase, Ichiro

Ueda, IkuhikoUeda, Ikuhiko

Marubayashi, NobuhiroMarubayashi, Nobuhiro

Kida, SigeoKida, Sigeo

Matsumoto, NaohideMatsumoto, Naohide

et al.et al.

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Article abstract of DOI:10.1039/DT9900002763

New octaamine dinucleating ligands, N,N',N'',N'''-tetrakis(2-aminoethyl)-1,4,7,11-tetra-azacyclotetradecane (taei), and -1,4,8,12-tetra-azacyclopentadecane (taep), and -1,5,9,13-tetra-azacyclocyclohexadecane (taeh) and their complexes with Cu(II) and Ni(II) were synthesized.Of the 19 complexes isolated, the structures of 4, 4, and 3 were determined by X-ray analysis.In all these complexes each copper is co-ordinated by two ring nitrogens and two pendant amino nitrogens, and the two CuN4 co-ordination sets face each other.In the azido complex the N3- is bonded to both coppers in an end-to-end fashion.The dinuclear complexes 4 (L=taei or taep) further incorporate various anions between the two coppers to form 3.However, only the azido complex was obtained with taeh.The results are discussed in terms of the ring-size effect.

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