Copper(II) 3,5-Dinitrosalicylate – The Unique System for Cocrystal Formation by Gentle Changes in Preparation Procedure

Gembický, Milan, Moncoľ, Ján, Lebrušková, Katarína, Martiška, Ladislav and Valigura, Dušan Copper(II) 3,5-Dinitrosalicylate – The Unique System for Cocrystal Formation by Gentle Changes in Preparation Procedure Acta Chimica Slovaca, Vol.1, No. 1, 2008, 290-300

Document type: Článok z časopisu / Journal Article
Collection: Acta Chimica Slovaca  
 
Attached Files
Name Description MIMEType Size Downloads
acs_0025.pdf   acs_0025.pdf application/pdf 313.35KB 0

Author(s) Gembický, Milan
Moncoľ, Ján
Lebrušková, Katarína
Martiška, Ladislav
Valigura, Dušan
Title Copper(II) 3,5-Dinitrosalicylate – The Unique System for Cocrystal Formation by Gentle Changes in Preparation Procedure
Journal name Acta Chimica Slovaca
Publication date 2008
Year available 2008
Volume number 1
Issue number 1
ISBN 978-80-227-2957-4
Start page 290
End page 300
Total pages 11
Place of publication Bratislava
Publisher Slovak Technical University
Collection year 2008
Language english
Subject 250000 Chemical Sciences
250200 Inorganic Chemistry
Abstract/Summary Reactions of copper(II) salts with 3,5-dinitrosalicylic acid in presence of zinc(II), or manganese(II) salts yield to the complexes (1) or (2) formation. The composition of complexes found from X-ray structural analysis show that the co-crystals of composition [Cu3{3,5-(NO2)2sal2–}2{3,5-(NO2)2sal1–}2(H2O)4]x[Cu{3,5-(NO2)2sal1–}2(H2O)2]2(1–x)·4H2O (3,5-(NO2)2salz– = 3,5-dinitrosalicylate(z–) anion, x = 0.420(2) for (1) and x = 0.225(2) for (2)) were obtained. The crystal structures have been determined and refined to R = 0.042 (wR = 0.092), and R = 0.039 (wR = 0.087) for complex (1) and (2), respectively. The complexes crystallizes in monoclinic system, space group P21/c, and the structure of the complexes comprise of the centrosymmetric trimeric [Cu3{3,5-(NO2)2sal2–}2{3,5-(NO2)2sal1– }2(H2O)4] molecules, that are to the extent x replaced by pairs of monomeric [Cu{3,5- (NO2)2sal1–}2(H2O)2]. The water molecules complete structures by system of different types of hydrogen bonds. The Cu2 atom in [Cu3{3,5-(NO2)2sal2–}2{3,5-(NO2)2sal1–}2(H2O)4] is centrosymmetrically coordinated by two 3,5-dinitrosalicylato dianion thus forming the square planar CuO4 chromophore. Each of the satellite Cu1 atoms are coordinated by one oxygen atom of bridging 3,5-dinitrosalicylato dianion, two oxygen atoms of chelating 3,5- dinitrosalicylato monoanion (in the phenolato form), and by two water oxygen atoms in the square pyramidal coordination polyhedron. The Cu1 atoms in monomeric molecules are coordinated by one oxygen atom of monodentately coordinated 3,5-dinitrosalicylato monoanion, by two oxygen atoms of chelating 3,5-dinitrosalicylato monoanion, and by two water oxygen atoms to form the square pyramidal coordination polyhedron.
Keyword(s) copper complex
co-crystal
crystal structure
salicylato ligand
 
 
User Comments
 
Access Statistics: 0 Abstract Views, 0 File Downloads Detailed Statistics
Created: Fri, 18 Dec 2009, 12:03:30 CET by Iveta Drtilová . Detailed History