Crystal structure of (1,3-bis(4-pyridyl)propane)-(1H-2-ethyl-4,5- dicarboxylato-imidazole-N,O)cobalt(II), Co(C7H5O4N2)(C13H14N2)

Abstract

Source of material 1-hydrogen-2-ethyl-4,5-imidazole dicarboxylate acid (0.019 g, 0.1 mmol), Co(CH 3 CH 2 COO) ⋅ 4H 2 O(0.025 g, 0.1 mmol), and NaOH (0.004 g, 0.1 mmol) were added to water (10 ml) in aTeflon-lined stainless-steel reactor. The mixture was heated at 403 K for 4d,and then slowly cooled down to room temperature. Pink block-shaped crystals of the title compound were obtained. DiscussionThe design and construction of metal-organic coodination polymers is of current interest in the field of supramocular chemistry and crystal engineering. The effective and facile approach for the synthesis of such complexes is still the appropriate choice. It is well known carboxylate ligands play an important role in coodination chemistry [1,2]. On the other hand, N-containing auxiliary ligands may tune the structures of the resultant metalorganic complexes [3][4][5][6]. The asymmetric unit of the title crystal structure consists of a1H-hydrogen-2-ethyl-4,5-imidazoledicarboxylate, aCo(II) ion and a 1,3-di(4-pyridyl)-propane. Co ion is six-coordinated by two carboxlate oxygen atoms and two Natoms of two 1H-2-ethyl-4,5-imidazoledicarboxylate and two Na toms of two 1,3-di(4-pyridyl)propane, forming ad istorted octahedron with.128(2) Å.Furthermore, CoN 4O2 octahedra are bridged by two symmetry-related bipyridyl molecules and two symmetry-related 1H-2-ethyl-4,5-imidazoledicarboxylate molecules forming aone-dimensional chain.

Preparation and Spectral Characterization of New Azo Imidazole Ligand 2-[(2`-Cyano Phenyl) Azo]-4,5-Diphenyl Imidazole and its Complexes with Co(II), Ni(II), Cu(II), Zn(II), Cd(II) and Hg (II) Ions

“…The complexes insoluble in water but soluble in most organic solvents. The analytical and physical data of the ligand and it`s complexes are given in table (1) .…”

“…Imidazole is ubiquitous in biology and chemistry [1]. This has encouraged the design of molecules with imidazole as one of the ligand platforms.…”