Abstract
A cadmium(II) iodide compound of the [Cd(L)I]I series, with L = tris(2-aminoethyl)amine, is synthesized and characterized. X-ray structural study shows that the title compound has a slightly distorted trigonal bipyramidal environment where the CdN4I chromophore is bounded by N atoms of L and one iodide. In the structural arrangement, the [Cd(L)I]+ cationic complexes are interconnected via N-H···I hydrogen bonds generated by the uncoordinated I iodide anions to form layers parallel to the (a, c) plane. The 13C CP-MAS NMR spectrum is discussed and the vibrational absorption bands were identified by infrared spectroscopy and DFT calculations.
Highlights
The last decade has witnessed an enormous effect in compound is (Cd)(II) coordination polymers, which display variety of metal-organic frameworks [1,2,3] with interesting electronic and optoelectronic properties [4,5,6,7]
Cadmium(II) with d10 configuration can adopt a variety of coordination geometries, which can range within tetrahedral, trigonal bipyramidal, square pyramidal and octahedral and are useful for the construction of coordination frameworks [8]
Combination of both metal–ligand covalent bonding and hydrogen bonding in designing the coordination polymers has been considered as an attractive design strategy because of the possibility of structural variations and guest entrapment induced by specific hydrogen bonding interactions
Summary
The last decade has witnessed an enormous effect in Cd(II) coordination polymers, which display variety of metal-organic frameworks [1,2,3] with interesting electronic and optoelectronic properties [4,5,6,7]. Cadmium(II) with d10 configuration can adopt a variety of coordination geometries, which can range within tetrahedral, trigonal bipyramidal, square pyramidal and octahedral and are useful for the construction of coordination frameworks [8]. Hydrogen bonding plays a crucial role in the construction of coordination polymers [9]. Combination of both metal–ligand covalent bonding and hydrogen bonding in designing the coordination polymers has been considered as an attractive design strategy because of the possibility of structural variations and guest entrapment induced by specific hydrogen bonding interactions. It is worth noticing that Satapathi et al [13] have reported a binuclear cadmium(II) iodide with the same ligand comprising two cadmium(II) centers, with one trigonal bipyramidal geomerty and the other with Td environment, whereas one iodide ion bridges the two metal centers
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