Ligands designed to impose tetrahedral co-ordination: a convenient route to aminoethyl and aminopropyl pendant arm derivatives of 1,5,9-triazacyclododecane
摘要:
The macrocyclic ligands 1-(2-aminoethyl)- (L1) and 1-(3-aminopropyl)-1,5,9-triazacyclododecane (L2) have been synthesised from 2,4-dioxo-1,5,9-triazacyclododecane, and the complexes [ZnL1(OClO3)]ClO4 (trigonal bipyramidal) and [NiL2(NCS)2] (octahedral) characterised by X-ray crystallography; L1 and L2 form more stable complexes than do analogues bearing tertiary amino groups on the pendant arms, but allow higher co-ordination numbers.
Ligands designed to impose tetrahedral co-ordination: a convenient route to aminoethyl and aminopropyl pendant arm derivatives of 1,5,9-triazacyclododecane
摘要:
The macrocyclic ligands 1-(2-aminoethyl)- (L1) and 1-(3-aminopropyl)-1,5,9-triazacyclododecane (L2) have been synthesised from 2,4-dioxo-1,5,9-triazacyclododecane, and the complexes [ZnL1(OClO3)]ClO4 (trigonal bipyramidal) and [NiL2(NCS)2] (octahedral) characterised by X-ray crystallography; L1 and L2 form more stable complexes than do analogues bearing tertiary amino groups on the pendant arms, but allow higher co-ordination numbers.
The first anionic sulfonamide-binding zinc(II) complexes with a macrocyclic triamine: chemical verification of the sulfonamide inhibition of carbonic anhydrase
A zinc(II) complex with 1-(3-(p-toluensulfonamido)propyl)-1,5,9-triazacycloundecane («tosylamidopropyl[12]aneN 3 », L 2 ), has been synthesized as a model for sulfonamide inhibition of carbonic anhydrase (CA). X-ray crystal structure analysis showed a distorted tetrahedral structure.
锌 (II) 与 1-(3-(p-toluensulfonamido) 丙基)-1,5,9-三氮杂环十一烷 («tosylamidopropyl[12]aneN 3 », L 2 ) 配合物已合成为磺胺抑制模型碳酸酐酶 (CA)。X-射线晶体结构分析显示扭曲的四面体结构。