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Cobalt 2,2 '-biimidazole complexes co-crystallised with di-acids - synthesis, structure and quantum chemical calculations

Krister Larsson (Institutionen för material- och ytkemi, Oorganisk kemi) ; Lars Öhrström (Institutionen för material- och ytkemi, Oorganisk kemi)
Crystengcomm Vol. 6 (2004), p. 354-359.
[Artikel, refereegranskad vetenskaplig]

The synthesis and crystal structure of [Co(Hbiim)(2)(H(2)biim)](2)(p-OOCC6H4COOH)(2).H2O (2) is presented. The cobalt(III) complexes are bridged by terephthalates and water molecules, giving a rare, five-fold interpenetrated, net built from 3-connected nodes. The vertex symbol (topology) of this net is determined to 4 122 122, 4 126, 12(4) 12(6) 12(6), or 4 12(2), 4 12(2), 12(3), using the Wellsian point symbol system. However, depending on the interpretation of the hydrogen bond pattern, this structure may also be interpreted as a single self-interpenetrating net via a water bridge. Quantum chemical calculations (DFT and semi-empirical methods) were used to investigate which is the more appropriate description by estimation of the directional forces in the structure. This approach favours five interpenetrating nets.

Nyckelord: coordination polymers; 3-dimensional nets; metal-complexes; solids; tool



Denna post skapades 2006-08-29. Senast ändrad 2014-11-10.
CPL Pubid: 9907

 

Institutioner (Chalmers)

Institutionen för material- och ytkemi, Oorganisk kemi (2002-2004)

Ämnesområden

Kemi

Chalmers infrastruktur