Distinct 2-D and 3-D Co(II) coordination polymers with 5-bromonicotinate induced by different synthetic approaches

Chen, Jing; Liu, Peng-Wen; Li, Cheng‐Peng

doi:10.1016/j.inoche.2013.08.017

Cited by 10 publications

(2 citation statements)

References 24 publications

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“…There are some distinctive hydrogen-bonded ring motifs within the framework of 1 (Figure 5). The hexameric R 6 8 (16) motif is formed between four lattice water molecules and two symmetry-related polymeric chains (indicated in blue and red), each linked via a coordinated water molecule and a carboxylate O atom, while the intramolecular S 1 1 (6) motif is formed within the polymeric chain (indicated in red) via a coordinated water molecule and a carboxylate O atom (Figure 5).…”

Section: Crystal Structuresmentioning

confidence: 99%

“…[13] From the structural point of view, haloderivatives of nicotinic acid (pyridine-3-carboxylic acid) such as 2-chloronicotinic acid (2-Cl-nicH) and 5-bromonicotinic acid (5-Br-nicH) offer various but similar coordination modes towards metal ions. [14][15][16][17][18][19][20][21][22][23][24] Previously, we have studied nickel(II) coordination polymers with the selected haloderivatives of nicotinic acid (6-fluoronicotinic (6-F-nicH) or 6-chloronicotinic (6-Cl-nicH) acid) and 4,4'bipyridine (4,4'-bpy). [25][26] The 4,4'-bipyridine was used as an additional organic linker to ensure the formation of more diverse coordination polymers.…”

Section: Introductionmentioning

confidence: 99%

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Self‐Assembly of Cobalt(II) Coordination Polymers with Differently Halosubstituted Nicotinate Ligands and 4,4’‐Bipyridine – The Effect of the Halosubstituent Positions on Polymer Types

et al. 2021

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Two structurally different 1D cobalt(II) coordination polymers with 4,4'-bipyridine (4,4'-bpy) and 2-chloronicotinate (2-Cl-nic) or 5-bromonicotinate (5-Br-nic), namely {[Co(2-Cl-nic) 2 (4,4'bpy)(H 2 O) 2 ] • 4H 2 O} n (1) and {[Co(4,4'-bpy)(H 2 O) 4 ] [Co(5-Brnic) 4 (H 2 O) 2 ] • 4,4'-bpy • 2H 2 O} n (2), were prepared under the same experimental conditions. The cobalt(II) ions in 1 are bridged by 4,4'-bipyridine ligands into a 1D polymeric chain, each cobalt(II) ion being coordinated with two O-monodentate 2-chloronicotinate ligands and two water molecules as well, while 2 consists of a complex cation {[Co(4,4'-bpy)(H 2 O) 4 ] 2 + } n , in which cobalt(II) ions are bridged by 4,4'-bipyridine ligands into a 1D polymeric chain, and a complex anion [Co(5-Br-nic) 4 (H 2 O) 2 ] 2À , in which cobalt(II) ion is coordinated with four 5-bromonicotinate ligands (two of them being O-monodentate and the other two are Nmonodentate) and two water molecules. DFT calculations revealed a correlation between the halosubstituent (chlorine or bromine) positions in the employed nicotinate ligands and the cobalt(II) coordination environments in the obtained coordination polymers, being responsible for their different structural types.

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Section: Crystal Structuresmentioning

confidence: 99%