Loading…
Two novel coordination polymers with different molecular tectonics based on zinc nitrate and bisimidazole ligand
Two new coordination polymers, [Zn(2-mBIM) 2(NO 3) 2(H 2O) 2] n ( 1) and [Zn(BIM) 2(NO 3) 2(H 2O) 2] n (2) (2-mBIM = bis(2-methylimidazol-1-yl)methane, BIM = bis(imidazol-1-yl)-methane), were synthesized by the reactions of Zn(NO 3) 2 with 2-mBIM and BIM ligands. They were characterized by elemental...
Saved in:
Published in: | Journal of molecular structure 2008-10, Vol.889 (1), p.186-190 |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Summary: | Two new coordination polymers, [Zn(2-mBIM)
2(NO
3)
2(H
2O)
2]
n
(
1) and [Zn(BIM)
2(NO
3)
2(H
2O)
2]
n
(2) (2-mBIM
=
bis(2-methylimidazol-1-yl)methane, BIM
=
bis(imidazol-1-yl)-methane), were synthesized by the reactions of Zn(NO
3)
2 with 2-mBIM and BIM ligands. They were characterized by elemental analyses, IR, TGA and X-ray single-crystal diffraction techniques. Each of metal centers in
1 and
2 is coordinated in a slightly distorted tetrahedral geometry by four aromatic nitrogen atoms from four distinct 2-mBIM or BIM ligands, respectively. In compound
1, each pair of neighboring Zn
II centers is bridged by two 2-mBIM ligands to form a 16-membered macrometallacyclic structural motif. Each 2-mBIM ligand is coordinated to two Zn
II cations and acts as a bridged ligand to form a one-dimensional polymeric cationic chain structure. Compound
2 has a 2D network structure containing 1D channel, thereby each BIM ligand is coordinated to two Zn
II cations and thus acts as a bridging ligand. Moreover, each group of four BIM ligands is linked alternatively to each other by four Zn
II cations, resulting in a 32-membered macrometallacycle. |
---|---|
ISSN: | 0022-2860 1872-8014 |
DOI: | 10.1016/j.molstruc.2008.01.043 |