Synthesis and crystal structure of mono- and binuclear copper(II) complexes with 2,2’-bipyridine
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2022-02-01 23:53
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MELNIK, E., KOROPCHANU, E., FONARI, Marina, KRAVTSOV, Victor. Synthesis and crystal structure of mono- and binuclear copper(II) complexes with 2,2’-bipyridine. In: The International Conference dedicated to the 55th anniversary from the foundation of the Institute of Chemistry of the Academy of Sciences of Moldova, 28-30 mai 2014, Chișinău. Chișinău, Republica Moldova: Institutul de Chimie al AȘM, 2014, p. 92.
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The International Conference dedicated to the 55th anniversary from the foundation of the Institute of Chemistry of the Academy of Sciences of Moldova 2014
Conferința "The International Conference dedicated to the 55th anniversary from the foundation of the Institute of Chemistry of the Academy of Sciences of Moldova"
Chișinău, Moldova, 28-30 mai 2014

Synthesis and crystal structure of mono- and binuclear copper(II) complexes with 2,2’-bipyridine


Pag. 92-92

Melnik E.1, Koropchanu E.2, Fonari Marina1, Kravtsov Victor1
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 Institute of Chemistry of the Academy of Sciences of Moldova
 
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Disponibil în IBN: 23 ianuarie 2019


Rezumat

The interplay of various interactions such as coordination bonds, hydrogen bonds, π-π stacking, and other weaker interactions determine the final solid-state architecture of metalorganic materials (MOMs). Generally, the predictability of these interactions is decreasing with the decreasing of their strength. Numerous recent studies illustrate the role of coordination and hydrogen bonds as powerful tools in designing solids, while the possibility to generate predictable supramolecular solid-state architecture through π-π interactions is still questionable. From a crystal engineering perspective the metal complexes containing aromatic ligands are attractive candidates to study supramolecular architectures produced by means of π-π interactions. Copper-based complexes for decades remain the attractive targets for magneto- and biochemistry [1, 2]. Here we present the structures of three novel mixed-ligand Cu(II) complexes with 2,2’-bipyridine aromatic ligand, the mononuclear [Cu(2,2’-bipy)2(SO4)].CH3OH (1), [Cu(2,2’-bipy)2(CH3COO)](NCS).H2O (2), and binuclear [Cu2(2,2’bipy)2(bpy)](NCS)2(CH3COO)2].0.5DMF (3). Compounds 1 and 3 crystallize in the same monoclinic centrosymmetric space group C2/c, a=16.5438(6), b=12.0504(3), c=12.0568(5) Å, β= 120.795(5)° for 1, and a=26.249(2), b=13.9884(10), c=11.5839(8) Å, β= 105.269(8) ° for 3, respectively. Compound 2 crystallizes in the triclinic centrosymmetric space group P-1, a=8.4737(5), b=10.2826(10), c=14.7370(9) Å, α=71.047(7), β= 84.759(5), γ=75.433(6) °. The X-ray analysis reveals the Cu(II) N4O2distorted octahedral cores generated from four bipyridine N atoms and chelating sulfate or acetate groups in mononuclear 1 and 2, and the distorted N4O-square pyramidal core in 3 generated from two aromatic ligands and two anions. Herein, we demonstrate how π-π interactions of the aromatic ligands of Cu(II) complexes may provide the porous solid state crystalline MOMs.