Jump to main content
Jump to site search

Issue 27, 2013
Previous Article Next Article

Diverse manganese(II) coordination polymers derived from achiral/chiral imidazolium-carboxylate zwitterions and azide: structure and magnetic properties

Author affiliations

Abstract

Five Mn(II) coordination polymers containing azide and carboxylate as simultaneous bridges have been derived from different imidazolium-carboxylate zwitterionic ligands: 1-methyl-3-(carboxylatomethyl)imidazolium (L1), 1,3-bis(carboxylatomethyl)imidazolium (L2), (S,S)-, (R,R)-, and (R,S)-1,3-bis(1-carboxylatoethyl)imidazolium (S,S-L3, R,R-L3 and R,S-L3). The compounds are formulated as [Mn(L1)(N3)2] (1), [Mn(L2)(N3)] (2), [Mn(R,R-L3)(N3)]·0.5CH3OH (3-R), [Mn(S,S-L3)(N3)]·0.5CH3OH (3-S), [Mn(R,S-L3)(N3)] (4). In compound 1, the neutral monocarboxylate zwitterion ligand (L1) leads to uniform chains with bis(azide)(carboxylate) bridges. For compounds 2–4, the anionic dicarboxylate zwitterions L2 and L3 lead to (azide)bis(carboxylate) bridges, but the overall coordination networks are different. In 2 and 3-S (or 3-R), chains with the (azide)bis(carboxylate) bridges are connected by L2 and S,S-L3 (or R,R-L3), respectively, to give achiral and chiral 2D coordination networks with different connecting topologies. In compounds 4, which is derived from the mesomeric ligand R,S-L3, linear trinuclear units with the (azide)bis(carboxylate) bridges are linked by μ-1,3 azides to give 2D layers, and the layers are pillared into a 3D framework by the 1,3-dimethyleneimidazolium tethers. Magnetic analyses suggested that compounds 1–3 behave as 1D antiferromagnetic systems, while 4 shows canted antiferromagnetism with weak ferromagnetic ordering below TC = 12.4 K.

Graphical abstract: Diverse manganese(ii) coordination polymers derived from achiral/chiral imidazolium-carboxylate zwitterions and azide: structure and magnetic properties

Back to tab navigation

Supplementary files

Publication details

The article was received on 25 Feb 2013, accepted on 04 May 2013 and first published on 09 May 2013


Article type: Paper
DOI: 10.1039/C3DT50510C
Citation: Dalton Trans., 2013,42, 10000-10010
  •   Request permissions

    Diverse manganese(II) coordination polymers derived from achiral/chiral imidazolium-carboxylate zwitterions and azide: structure and magnetic properties

    X. Wang, X. Li, R. Yan, Y. Wang and E. Gao, Dalton Trans., 2013, 42, 10000
    DOI: 10.1039/C3DT50510C

Search articles by author

Spotlight

Advertisements