NDLI: Polycarboxylate-assisted assembly of cobalt(II) metal–organic coordination polymers from a “V”-shaped tri-pyridyl-bis-amide ligand

Content Provider	Springer Nature Link
Author	Liu, Lian Li Huang, Jing Jing Zhang, Ju Wen Liu, Guo Cheng Wang, Xiu Li Lin, Hong Yan Chen, Nai Li Qu, Yun
Copyright Year	2013
Abstract	The aim of this study was to explore the influence of the position and angles of carboxyl groups of polycarboxylates on constructing coordination polymers. Three Co(II) metal–organic coordination polymers based on a tri-pyridyl-bis-amide ligand, namely [Co(L)(1,2-BDC)(H$_{2}$O)$_{2}$]·2H$_{2}$O (1), [Co(L)(1,4-BDC)(H$_{2}$O)$_{2}$]·2H$_{2}$O (2) and [Co(L)$_{2}$(BTEC)$_{0.5}$]·H$_{2}$O (3) (L = N,N′-bis(pyridine-3-yl)pyridine-2,6-dicarboxamide, 1,2-H$_{2}$BDC = 1,2-benzenedicarboxylic acid, 1,4-H$_{2}$BDC = 1,4-benzenedicarboxylic acid, H$_{4}$BTEC = 1,2,4,5-benzenetetracarboxylic acid), have been obtained by tuning the auxiliary polycarboxylate ligands. Structural analyses reveal that complexes 1–3 display diverse structures. Complex 1 displays a meso-helical chain linked by L ligands, which is further extended into a three-dimensional supramolecular framework through hydrogen-bonding interactions. The 1,2-BDC with a chelating coordination mode only acts as the hydrogen bond acceptor. In complex 2, the 1,4-BDC anions connect adjacent Co(II) atoms to form a linear chain, which is connected by hydrogen-bonding interactions to construct a 3D supramolecular network. Complex 3 exhibits a chain, which is composed of left-/right-handed Co-L helical chains and Co-BTEC linear chain. The 1D chains are ultimately extended into a two-dimensional supramolecular network by hydrogen-bonding interactions. Moreover, the thermal stability and the fluorescent properties of the title complexes and the electrochemical behaviors of a bulk-modified carbon paste electrode with complex 2 have been investigated at room temperature.
Starting Page	689
Ending Page	697
Page Count	9
File Format	PDF
ISSN	03404285
Journal	Transition Metal Chemistry
Volume Number	38
Issue Number	6
e-ISSN	1572901X
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-06-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Catalysis Physical Chemistry Inorganic Chemistry
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Inorganic Chemistry

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