Polynuclear 3d complexes based on potentially tetra-anionic heptadentate ligands including amido, amino and phenoxo donors: Synthesis, crystal structure and magnetic properties
methoxo ligands, dinuclear manganese and tetranuclear copper complexes, respectively. 1 includes two well isolated MnIII ions (Mn⋯Mn′ = 7.33 A) that do not interact magnetically. The intermolecular Mn⋯Mn″ distance along the 1D chains (10.17 A) is also too large to allow extended magnetic interactions. The pairwise magnetic interactions between the copper(II) ions in the tetranuclear complex 2 are so
A zwitterion of 1,5-bis(2-hydroxybenzamido)-3-azapentane: a two-dimensional hydrogen-bonding network involving dimers
作者:Hui-Min Liu、Lei He、Xiao-Lan Luo、Wen-Qin Zhang
DOI:10.1107/s0108270106001545
日期:2006.2.15
The title compound, 2-N-[2-(2-hydroxybenzamido) ethylammonioethyl] aminocarbonyl} phenolate, C18H21N3O4, crystallizes in a zwitterionic form as a result of intermolecular proton transfer and possesses a negatively charged phenolate group and a protonated amino group. The 2- hydroxybenzamide and 2-( aminocarbonyl) phenolate moieties attached to the two ends of the C - C - N - C - C backbone adopt a cis conformation in relation to this backbone. All Nand O-bound H atoms are involved in hydrogen-bond formation; the zwitterions are first linked into head-to-tail dimers, which are further organized into a two-dimensional network parallel to the crystallographic bc plane.
Sureshan; Bhattacharya, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1998, vol. 37, # 10, p. 897 - 900
作者:Sureshan、Bhattacharya
DOI:——
日期:——
Sureshan; Bhattacharya, Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1999, vol. 38, # 7, p. 723 - 726
作者:Sureshan、Bhattacharya
DOI:——
日期:——
Dash, Anadi C.; Rath, Rohit K., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 2004, vol. 43, # 2, p. 310 - 314