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Coordination behaviour of 1-(4,2':6',4''-terpyridin-4'-yl)ferrocene and 1-(3,2':6',3''-terpyridin-4'-yl)ferrocene: predictable and unpredictable assembly algorithms

Klein, Y. Maximilian and Prescimone, Alessandro and Constable, Edwin C. and Housecroft, Catherine E.. (2017) Coordination behaviour of 1-(4,2':6',4''-terpyridin-4'-yl)ferrocene and 1-(3,2':6',3''-terpyridin-4'-yl)ferrocene: predictable and unpredictable assembly algorithms. Australian Journal of Chemistry, 70 (5). pp. 468-477.

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Abstract

The reaction of 1-(4,2':6',4''-terpyridin-4'-yl)ferrocene ( 2 ) with ZnI 2 leads to [{ZnI 2 ( 2 )} 4 . 1.4MeOH . 0.8H 2 O] which contains a discrete [4+4] metallocycle. Crystal growth experiments demonstrate that reactions of 2 with Zn(OAc) 2 or CuCl 2 result in the formation of single- or double-stranded 1D-polymer chains, respectively, the latter facilitated by the formation of {Cu 2 Cl 4 } dinuclear nodes. Whilst both 2 and its isomer 1-(3,2':6',3''-terpyridin-4'-yl)ferrocene ( 3 ) present V-shaped donor sets, rotation about interannular bonds in 3 generates flexible vectorial properties associated with limiting convergent and divergent orientations of the nitrogen donors. The synthesis and characterization of 3 are described as are reactions of 3 with ZnCl 2 or ZnBr 2 which lead, respectively, to a metallosquare in [{ZnCl 2 ( 3 )} 4 . 3CHCl 3 . 3MeOH] or a helical polymer in [{ZnBr 2 ( 3 )} . MeOH] n . The tight pitch of the helix in the latter (8.7879(9) Å) is controlled by a combination of the orientations of the N,N ''-donor sets in 3 , and intra-chain π-stacking interactions involving ferrocenyl and pyridine units.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Constable)
05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)
UniBasel Contributors:Housecroft, Catherine Elizabeth and Constable, Edwin Charles and Prescimone, Alessandro and Klein, Maximilian
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:CSIRO Publishing
ISSN:0004-9425
e-ISSN:1445-0038
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:03 May 2017 14:34
Deposited On:03 May 2017 14:32

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