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The Effect of Terminal Ligands on the Dimensionality and Topology of Metal Dicarboxylate Coordination Structures

Published online by Cambridge University Press:  01 February 2011

Long Pan ,
Nancy Ching ,
Xiaoying Huang ,
Jeongyong Lee ,
Jing Li ,
Tan Yuen ,
C. L. Lin  and
Jason Zan
Long Pan
Affiliation:
Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854
Nancy Ching
Affiliation:
Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854
Xiaoying Huang
Affiliation:
Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854
Jeongyong Lee
Affiliation:
Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854
Jing Li
Affiliation:
Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854
Tan Yuen
Affiliation:
Department of Physics, Temple University, Philadelphia, PA 19122
C. L. Lin
Affiliation:
Department of Physics, Temple University, Philadelphia, PA 19122
Jason Zan
Affiliation:
Department of Physics, Temple University, Philadelphia, PA 19122
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Abstract

Solvothermal/hydrothermal reactions of 4, 4′-biphenyldicarboxylic acid (H2bpdc) and cobalt (II) salt with pyridine derivative ligands such as 3-methylpyridine (3-pic), 4-methylpyridine (4-pic), as well as a longer terminal ligand 4-benzylpyridine (4-bzpy) generated four new extended structures: 1D zigzag polymer chain 1 crystallized in C2/c with a formula [Co(bpdc)(3-pic)2]·(3-pic); 1D helical chain compound 2 crystallized in P41 with a formula [Co(bpdc)(4-pic)2], 2D non-interpenetrating network 3 crystallized in P2221 with a formula [Co(bpdc)(4-pic)2]·(4-pic)0.5·H2O, and 2D non-interpenetrating network 4 crystallized in P2/c, formulated as [Co(bpdc)(bzpy)2]. Our studies show that terminal ligands play an important role in affecting the dimensionality and topology of the structures formed. Magnetic susceptibility and isothermal magnetization results revealed an antiferromagnetic ground state for 3 with a transition temperature T = 4.7 K, and paramagnetic behavior at high temperature range for 1 and 2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 848: Symposium FF – Solid-State Chemistry of Inorganic Materials V , 2004 , FF3.16
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCE

1. Pan, L., Liu, H. M., Lei, X. G., Huang, X. Y., Olson, D. H., Turro, N. J., Li, J., Angew. Chem, Int. Ed. 42, 542 (2003).Google Scholar
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5. Structure was refined as racemic twin. Contribution of one specimen to the racemic twin 0.49(19).Google Scholar
6. Disordered guest molecules, probably bzpy and/or water, exist in the structure. But we were not able to identify them based on the X-ray data.Google Scholar