A novel copper(II) 2D coordination polymer constructed of iminodiacetic acid
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2020-06-14 12:58
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URECHE, Dumitru; BULHAK, Ion; KRAVTSOV, Victor; BOUROSH, Pavlina. A novel copper(II) 2D coordination polymer constructed of iminodiacetic acid. In: Achievements and perspectives of modern chemistry. 9-11 octombrie 2019, Chişinău. Chisinau, Republic of Moldova: Tipografia Academiei de Ştiinţe a Moldovei, 2019, p. 150. ISBN 978-9975-62-428-2.
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Achievements and perspectives of modern chemistry 2019
Conferința "International Conference "Achievements and perspectives of modern chemistry""
Chişinău, Moldova, 9-11 octombrie 2019

A novel copper(II) 2D coordination polymer constructed of iminodiacetic acid


Pag. 150-150

Ureche Dumitru12, Bulhak Ion1, Kravtsov Victor3, Bourosh Pavlina32
 
1 Institute of Chemistry,
2 Moldova Tiraspol State University,
3 Institute of Applied Physics
 
Disponibil în IBN: 7 noiembrie 2019


Rezumat

The iminodiacetic acid NH(CH2COOH)2 (H3IDA)may serve as a polydentate ligand and coordinates to the metal through the oxygen atoms of two carboxyl groups and nitrogen atom. In the known mononuclear and polynuclear complexes of H3IDA the molar ratio metal: ligand is 1: 1 or 1: 2 [1, 2]. The interaction Cu(CH3COO)2·H2O salt with dianilineglyoxime and H3IDA resulted in coordination compound with composition {[NH2(CH3)2]2[Cu3(HIDA)4]·H2O}n which doesn’t contain dioxyme. The obtained complex has been studied by X-ray single crystal method.Compound crystallizes in monoclinic C2/c space group, a=40.128(3) Å, b=9.9510(6) Å, c=15.9211(9) Å, b=105.245(6)o, V=6133.8(7) Å3. The structure of compound reveals parallel 2D anionic [Cu3(HIDA)4]n2n-layers with 4,4-grid topology, separated by [NH2(CH3)2]+cations and solvate water molecules. The latter are involved in N–H···O and O(w)–H···O hydrogen bonds which linked the layers. The asymmetric part of unit cell comprises three Cu(II) atoms, four bideprotonated organic ligands (HIDA)2-, two dimethylammonium cations, and water molecule. The coordination environments are N2O4for one and NO5 for two other metal atoms. The surrounding of Cu2 is provided by two organic ligands each coordinated by NO2 donor atoms in fac-manner and resulted in square-bipyramidal coordination polyhedron. The coordination sphere of two other metal atoms (Cu1 and Cu3) is provided by NO2 donor atoms of one ligand coordinated in mer-fashion and bridging or chelate-bridging function of the carboxylic groups of two others ligands involved in coordination to neighboring Cu2 atom (Figure) and resulted in distorted square-bipyramidal coordination environment. Thus, two of symmetry independent ligands are hexa-dentate and coordinate simultaneously to three metal atoms, while two others are tridentate and coordinate only one metal atom.Figure. The structure of trinuclear fragment (a) and the anionic 2D polymeric grid (b)