Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine
Three new dicyanamide-bridged polymeric complexes of {[Mn(dca)2(L)2]·2H2O}n (1), {[Cd(dca)2(L)2]·2H2O}n (2), and {[Co(dca)2(L)2]2(L)}n (3) (dca = dicyanamide, L = pyridinium-4-olate) have been synthesized and structurally characterized. In the three compounds, the protons of hydroxyl groups of 4-hyd...
Saved in:
Main Author: | |
---|---|
Format: | Article |
Language: | English |
Published: |
Wiley
2013-01-01
|
Series: | Journal of Chemistry |
Online Access: | http://dx.doi.org/10.1155/2013/291703 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
_version_ | 1832567571870646272 |
---|---|
author | Lingling Zheng |
author_facet | Lingling Zheng |
author_sort | Lingling Zheng |
collection | DOAJ |
description | Three new dicyanamide-bridged polymeric complexes of {[Mn(dca)2(L)2]·2H2O}n (1), {[Cd(dca)2(L)2]·2H2O}n (2), and {[Co(dca)2(L)2]2(L)}n (3) (dca = dicyanamide, L = pyridinium-4-olate) have been synthesized and structurally characterized. In the three compounds, the protons of hydroxyl groups of 4-hydroxypyridine transfer to pyridyl nitrogen atoms. Compounds 1 and 2 are isomorphous forming one-dimensional [M(dca)2(L)2]n chains where metals are connected by double dca anions. These one-dimensional chains are extended into two-dimensional layers through weak C–H⋯N hydrogen bonds. Further, these layers are assembled into a three-dimensional supramolecular network through N–H⋯O, O–H⋯O hydrogen bonds. Complex 3 is a coordination layer of (4, 4) topology with octahedral metal centers linked by four single μ1,5-bridges. These layers are interlocked by N–H⋯O, O–H⋯O hydrogen bonds from coordinated water molecules and free L molecules, which leads to a three-dimensional supramolecular architecture. The variable temperature magnetic susceptibilities measurement of compounds 1 and 3 shows the existence of weak antiferromagnetic interactions between the metal centers. The thermogravimetric analyses of the compounds 1–3 are also discussed. |
format | Article |
id | doaj-art-29ca940ad4d749e7b0a9d29ce1365901 |
institution | Kabale University |
issn | 2090-9063 2090-9071 |
language | English |
publishDate | 2013-01-01 |
publisher | Wiley |
record_format | Article |
series | Journal of Chemistry |
spelling | doaj-art-29ca940ad4d749e7b0a9d29ce13659012025-02-03T01:01:11ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/291703291703Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-HydroxypyridineLingling Zheng0Guangzhou Vocational College of Technology & Business, Guangzhou 511442, ChinaThree new dicyanamide-bridged polymeric complexes of {[Mn(dca)2(L)2]·2H2O}n (1), {[Cd(dca)2(L)2]·2H2O}n (2), and {[Co(dca)2(L)2]2(L)}n (3) (dca = dicyanamide, L = pyridinium-4-olate) have been synthesized and structurally characterized. In the three compounds, the protons of hydroxyl groups of 4-hydroxypyridine transfer to pyridyl nitrogen atoms. Compounds 1 and 2 are isomorphous forming one-dimensional [M(dca)2(L)2]n chains where metals are connected by double dca anions. These one-dimensional chains are extended into two-dimensional layers through weak C–H⋯N hydrogen bonds. Further, these layers are assembled into a three-dimensional supramolecular network through N–H⋯O, O–H⋯O hydrogen bonds. Complex 3 is a coordination layer of (4, 4) topology with octahedral metal centers linked by four single μ1,5-bridges. These layers are interlocked by N–H⋯O, O–H⋯O hydrogen bonds from coordinated water molecules and free L molecules, which leads to a three-dimensional supramolecular architecture. The variable temperature magnetic susceptibilities measurement of compounds 1 and 3 shows the existence of weak antiferromagnetic interactions between the metal centers. The thermogravimetric analyses of the compounds 1–3 are also discussed.http://dx.doi.org/10.1155/2013/291703 |
spellingShingle | Lingling Zheng Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine Journal of Chemistry |
title | Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine |
title_full | Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine |
title_fullStr | Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine |
title_full_unstemmed | Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine |
title_short | Syntheses, Crystal Structures, Magnetic Behaviours, and Thermal Properties of Three Hydrogen-Bonding Networks Containing Dicyanamide and 4-Hydroxypyridine |
title_sort | syntheses crystal structures magnetic behaviours and thermal properties of three hydrogen bonding networks containing dicyanamide and 4 hydroxypyridine |
url | http://dx.doi.org/10.1155/2013/291703 |
work_keys_str_mv | AT linglingzheng synthesescrystalstructuresmagneticbehavioursandthermalpropertiesofthreehydrogenbondingnetworkscontainingdicyanamideand4hydroxypyridine |