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Crystal structure, characterization and catalytic activities of Cu(II) coordination complexes with 8‐hydroxyquinoline and pyrazine‐2‐carboxylic acid
Author(s) -
Etaiw Safaa Eldin H.,
Elbendary Mohamed M.
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4213
Subject(s) - chemistry , pyrazine , catalysis , hydrogen bond , crystal structure , 8 hydroxyquinoline , copper , octahedral molecular geometry , coordination complex , molecule , crystallography , octahedron , photoluminescence , chloride , photochemistry , metal , inorganic chemistry , stereochemistry , organic chemistry , physics , optics
Green and blue crystals of the coordination complexes [Cu(8‐hquin) 2 (H 2 O) 2 ], 1 and [Cu(pyzca) 2 (H 2 O) 2 ], 2 were obtained by the reaction of copper chloride with 8‐hydroxyquinoline (8‐hquinH) or pyrazine‐2‐carboxylic acid (pyzcaH) as ligands. The structures of 1 and 2 were characterized by elemental analyses, electronic absorption, Infrared (IR) and thermal studies. The luminescent behavior complexes 1 and 2 was also discussed. The coordination environment of copper(II) center displays distorted octahedral coordination geometry. The structure of the complexes 1 and 2 is constructed by an infinite number of discrete mononuclear molecules extending along the a‐axis to form a 1D‐chain via H‐bonds. The extensive hydrogen bonds and short contacts develop the structures of 1 and 2 to 3D‐network. The catalytic behavior of the complexes 1 and 2 was utilized for degradation of methylene blue dye (MB). The kinetic data indicated that the complexes 1 and 2 are effective catalysts for degradation of MB dye. Photoluminescence probing technology was used as a sensitive probe for detecting • OH radicals.