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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
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| Attached Files |
| Name |
Description |
MIMEType |
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Downloads |
acs_0025.pdf
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acs_0025.pdf |
application/pdf |
313.35KB |
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| Author(s) |
Gembický, Milan
Moncoľ, Ján
Lebrušková, Katarína
Martiška, Ladislav
Valigura, Dušan
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| Title |
Copper(II) 3,5-Dinitrosalicylate – The Unique System for Cocrystal Formation by Gentle Changes in Preparation Procedure
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| Journal name |
Acta Chimica Slovaca
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| Publication date |
2008
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| Year available |
2008
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| Volume number |
1
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| Issue number |
1
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| ISBN |
978-80-227-2957-4
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| Start page |
290
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| End page |
300
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| Total pages |
11
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| Place of publication |
Bratislava
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| Publisher |
Slovak Technical University
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| Collection year |
2008
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| Language |
english
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| Subject |
250000 Chemical Sciences
250200 Inorganic Chemistry
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| 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.
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| Keyword(s) |
copper complex
co-crystal
crystal structure
salicylato ligand
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