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Mixed‐ligand Copper(II) Complexes with N‐isopropyl‐iminodiacetato(2‐) and C‐phenyl‐imidazole Ligands. Crystal Structures of H 2 iPIDA, [Cu(iPIDA)(H2ϕim)(H 2 O)]·3H 2 O and [Cu(iPIDA)(H5ϕim)] n
Author(s) -
RojasGonzález Perla Xochitl,
BrandiBlanco María Pilar,
Castiñeiras Alfonso,
ChoquesilloLazarte Duane,
GonzálezPérez Josefa María,
NiclósGutiérrez Juan
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200570033
Subject(s) - zwitterion , chemistry , isopropyl , imidazole , steric effects , ligand (biochemistry) , copper , protonation , crystallography , crystal structure , iminodiacetic acid , amine gas treating , stereochemistry , square pyramidal molecular geometry , molecule , medicinal chemistry , inorganic chemistry , chelation , ion , biochemistry , receptor , organic chemistry
The crystal of the N‐isopropyl‐iminodiacetic acid ( 1 ) consists of a 3D H‐bonded framework where the zwitterion (H 2 iPIDA ± ) is intra‐stabilized by one N + ‐H···O interaction and both carboxyl are half‐protonated and involved in linear O‐H···O inter‐molecular bridges of 2.46 Å. The mixed‐ligand complexes [Cu(iPIDA)(H2ϕim)(H 2 O)]·3H 2 O ( 2 ) and [Cu(iPIDA)(H5ϕim)] n ( 3 ) have also been synthesized and studied by thermal, spectral, magnetic and X‐ray diffraction methods. Both complexes exhibit a square base pyramidal coordination, type 4+1. Compound 3 is the less steric hindered 'remote' isomer, with H5ϕim instead of H4ϕim.