2-Dimensional networks assembled using 4′-functionalized 4,2′:6′,4″-terpyridines and Co(NCS)2
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- 作者：Y. Maximilian Klein ; Alessandro Prescimone ; Edwin C. Constable ; Catherine E. Housecroft ; catherine.housecroft@unibas.ch" class="auth_mail" title="E-mail the corresponding author
- 关键词：Cobalt ; 4 ; 2&prime ; 6&prime ; 4&Prime ; -Terpyridine ; Coordination polymer ; Coordination network ; Substituent effects
- 刊名：Polyhedron
- 出版年：2016
- 出版时间：8 January 2016
- 年：2016
- 卷：103
- 期：part_PA
- 页码：58-65
- 全文大小：3677 K
文摘
A series of 2-dimensional (4,4) nets formed in reactions of Co(NCS)2 with divergent 4′-functionalized-4,2′:6′,4″-terpyridine ligands is reported, and the effects of the 4′-substituent R (ligand 1, R = tBu; 5, R = MeO; 6, R = EtO; 7, R = nPrO) on the packing of the nets are described. The 2D-coordination networks in [{Co(NCS)2(6)2}·4CHCl3]n and [{Co(NCS)2(7)2}·4CHCl3]n are essentially isostructural. On going to [{Co2(NCS)4(5)4}·2CHCl3·1.5MeOH]n, modification of both the geometry of the rhombuses that comprise the network, and the packing occurs. All three structures feature head-to-tail π-stacking of 4′-(4-alkoxyphenyl) units, but with variation in their relative orientations. In contrast, [{Co(NCS)2(1)2}·0.5H2O]n comprises double layers of (4,4) nets with hydrophobic coatings of tert-butyl groups, leading to alternating wide and close spacings between adjacent nets.