Synthesis, structures and magnetic properties of two 2D → 3D entangled Cobalt(II) coordination polymers

Two Co(II) coordination polymers, namely Co(HBTC)(4-bpdb)·H 2 O ( 1 ) and Co(HBTC)(3-bpdb)·H 2 O ( 2 ) (H 3 BTC = 1,3,5-benzenetricarboxylic acid, 4-bpdb = 1,4-bis-(4-pyridyl)-2,3-diaza-1,3-butadiene, 3-bpdb = 1,4-bis(3-pyridyl)-2,3-diaza-1,3- butadiene), have been hydrothermally synthesized and cha...

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Bibliographic Details
Published in:Transition metal chemistry (Weinheim) 2017-09, Vol.42 (6), p.517-524
Main Authors: Sun, Qiao-Zhen, Liu, Na-Wei, Pan, Jun-Qiao, Zhang, Bing-Guang, Liu, Hui
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Organometallic Chemistry
Physical Chemistry
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Summary:Two Co(II) coordination polymers, namely Co(HBTC)(4-bpdb)·H 2 O ( 1 ) and Co(HBTC)(3-bpdb)·H 2 O ( 2 ) (H 3 BTC = 1,3,5-benzenetricarboxylic acid, 4-bpdb = 1,4-bis-(4-pyridyl)-2,3-diaza-1,3-butadiene, 3-bpdb = 1,4-bis(3-pyridyl)-2,3-diaza-1,3- butadiene), have been hydrothermally synthesized and characterized both structurally and magnetically. Compound 1 exhibits a (2D → 3D) polythreaded architecture. It is assembled from HBTC 2− ligands to form a 2D puckered (4,4) layer plus 4-bpdb ligands which are orientated above and below each layer. The structure of compound 2 consists of a 2D (3,5) wavelike sheet constructed from HBTC 2− anions and 3-bpdb spacers. The uncoordinated carboxyl groups of the HBTC 2− ligands protrude from both sides of the wavelike sheet to form a 2D → 3D interdigitated motif. The magnetic properties of both compounds are also investigated, indicating antiferromagnetic interactions between the adjacent metal centers.
ISSN:0340-4285
1572-901X
DOI:10.1007/s11243-017-0156-6