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Poly[diaquo(1,10-phenanthroline-κ:)(μ-sulphato-κ:′)copper()]: hydrothermal synthesis, crystal structure and magnetic properties

Of late, hydrothermal synthesis has gained much interest in the synthesis of metal-organic hybrid complexes with fascinating architectures and topologies. Product formation in such syntheses often depends on the nature of solvents, counter ions, pH and the ligand geometry. Copper-1,10-phenanthroline...

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Published in:RSC advances 2016-01, Vol.6 (51), p.463-4636
Main Authors: Kamath, Amarjit, Mishra, Dipu Kumar, Brahman, Dhiraj, Pilet, Guillaume, Sinha, Biswajit, Tamang, Abiral
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container_issue 51
container_start_page 463
container_title RSC advances
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creator Kamath, Amarjit
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Sinha, Biswajit
Tamang, Abiral
description Of late, hydrothermal synthesis has gained much interest in the synthesis of metal-organic hybrid complexes with fascinating architectures and topologies. Product formation in such syntheses often depends on the nature of solvents, counter ions, pH and the ligand geometry. Copper-1,10-phenanthroline, or similar ligand systems, have been very popular in supramolecular chemistry over the years. Hence, a new metal-organic hybrid complex poly[diaquo(1,10-phenanthroline-κ 2 N 1 : N 10 )(μ 2 -sulphato-κ 2 O : O ′)copper( ii )], i.e. , [Cu(C 12 H 8 N 2 )(H 2 O) 2 (μ-SO 4 )] n was synthesized by the hydrothermal method. Physico-chemical characterization of the complex was done using FTIR spectroscopy, single crystal X-ray diffraction, TGA, EPR, SQUID and FESEM. Single crystal X-ray diffraction studies revealed it to be three-dimensional with space group I 2/ c (monoclinic) and the unit cell dimensions are a = 7.0081 (3), b = 13.8198 (7) and c = 14.2897 (8) Å; the axial angles are α = 90°, β = 99.282 (5)° and γ = 90°. It features chains in which two successive pairs of Cu( ii ) ions are connected by SO 4 bridges and Cu( ii ) ions, each coordinated to two H 2 O molecules and two N-atoms of 1,10-phenanthroline, and the title complex has a distorted octahedral geometry. The alternating polymeric chains are connected through extensive hydrogen bonds between two O-atoms of SO 4 bridges from one chain and H atoms of the two coordinated H 2 O molecules of another chain in the three dimensional architecture. Alternating chains are shifted with respected to each other leading to the formation of zigzag channels within the crystal structure. EPR and SQUID studies revealed the paramagnetic nature of the complex. Of late, hydrothermal synthesis has gained much interest in the synthesis of metal-organic hybrid complexes with fascinating architectures and topologies.
doi_str_mv 10.1039/c6ra03493d
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Product formation in such syntheses often depends on the nature of solvents, counter ions, pH and the ligand geometry. Copper-1,10-phenanthroline, or similar ligand systems, have been very popular in supramolecular chemistry over the years. Hence, a new metal-organic hybrid complex poly[diaquo(1,10-phenanthroline-κ 2 N 1 : N 10 )(μ 2 -sulphato-κ 2 O : O ′)copper( ii )], i.e. , [Cu(C 12 H 8 N 2 )(H 2 O) 2 (μ-SO 4 )] n was synthesized by the hydrothermal method. Physico-chemical characterization of the complex was done using FTIR spectroscopy, single crystal X-ray diffraction, TGA, EPR, SQUID and FESEM. Single crystal X-ray diffraction studies revealed it to be three-dimensional with space group I 2/ c (monoclinic) and the unit cell dimensions are a = 7.0081 (3), b = 13.8198 (7) and c = 14.2897 (8) Å; the axial angles are α = 90°, β = 99.282 (5)° and γ = 90°. It features chains in which two successive pairs of Cu( ii ) ions are connected by SO 4 bridges and Cu( ii ) ions, each coordinated to two H 2 O molecules and two N-atoms of 1,10-phenanthroline, and the title complex has a distorted octahedral geometry. The alternating polymeric chains are connected through extensive hydrogen bonds between two O-atoms of SO 4 bridges from one chain and H atoms of the two coordinated H 2 O molecules of another chain in the three dimensional architecture. Alternating chains are shifted with respected to each other leading to the formation of zigzag channels within the crystal structure. EPR and SQUID studies revealed the paramagnetic nature of the complex. 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Product formation in such syntheses often depends on the nature of solvents, counter ions, pH and the ligand geometry. Copper-1,10-phenanthroline, or similar ligand systems, have been very popular in supramolecular chemistry over the years. Hence, a new metal-organic hybrid complex poly[diaquo(1,10-phenanthroline-κ 2 N 1 : N 10 )(μ 2 -sulphato-κ 2 O : O ′)copper( ii )], i.e. , [Cu(C 12 H 8 N 2 )(H 2 O) 2 (μ-SO 4 )] n was synthesized by the hydrothermal method. Physico-chemical characterization of the complex was done using FTIR spectroscopy, single crystal X-ray diffraction, TGA, EPR, SQUID and FESEM. Single crystal X-ray diffraction studies revealed it to be three-dimensional with space group I 2/ c (monoclinic) and the unit cell dimensions are a = 7.0081 (3), b = 13.8198 (7) and c = 14.2897 (8) Å; the axial angles are α = 90°, β = 99.282 (5)° and γ = 90°. It features chains in which two successive pairs of Cu( ii ) ions are connected by SO 4 bridges and Cu( ii ) ions, each coordinated to two H 2 O molecules and two N-atoms of 1,10-phenanthroline, and the title complex has a distorted octahedral geometry. The alternating polymeric chains are connected through extensive hydrogen bonds between two O-atoms of SO 4 bridges from one chain and H atoms of the two coordinated H 2 O molecules of another chain in the three dimensional architecture. Alternating chains are shifted with respected to each other leading to the formation of zigzag channels within the crystal structure. EPR and SQUID studies revealed the paramagnetic nature of the complex. 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source Royal Society of Chemistry
subjects Architecture
Chemical Sciences
Cristallography
Crystal structure
Diffraction
Material chemistry
SQUIDs
Superconducting quantum interference devices
Synthesis
Three dimensional
X-rays
title Poly[diaquo(1,10-phenanthroline-κ:)(μ-sulphato-κ:′)copper()]: hydrothermal synthesis, crystal structure and magnetic properties
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