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New 1- and 2-Dimensional Polymeric Structures of Cyanopyridine Complexes of Ag1 and Cu1

Lookup NU author(s): Ping Lin, Professor Richard Henderson, Dr Ross Harrington, Emeritus Professor Bill CleggORCiD


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Polymeric transition metal chalcogenides have attracted much attention because of their possible unusual properties directly derived from their extended structures. The molecules n-cyanopyridine (n = 2, 3, and 4) and pyridine-3,4-dicarbonitrile are found to function as bidentate or monodentate (only pyridine nitrogen donor atom) ligands in the coordination of silver(I) and copper(I) ions, respectively. The mode of coordination depends on the anion and the crystallization conditions and has been elucidated in all cases by single-crystal X-ray crystallography. We report here the syntheses, structural characterization, and electrical properties of six new polymers, [Ag 2(2-cyanopyridine)2-(NO3)2] n (1), [Ag4(3-cyanopyridine)8(SiF 6)2(H2O)2]n (2), [Ag(3-cyanopyridine)2(NO3)]n (3), [Ag(pyridine-3,4-dicarbonitrile)2-(NO3)]n (4), [Cu1(4-cyanopyridine)2(SCN)]n (5), and [Cu 1(pyridine-3,4-dicarbonitrile)2(SCN)]n (6). Compounds 1 and 2 exhibit novel two-dimensional networks, while 3-6 have one-dimensional chain structures, in which 3 is a single-stranded helix. Room-temperature conductivities of 1, 2, 4, and 6 have been measured and are 3. 1 × 10-7, 2.7 × 10-7, 7.4 × 10 -6, and 4.3 × 10-5 S·cm-1, respectively. The effect of temperature on the conductivities has been investigated.

Publication metadata

Author(s): Lin P, Henderson RA, Harrington RW, Clegg W, Wu C-D, Wu X-T

Publication type: Article

Publication status: Published

Journal: Inorganic Chemistry

Year: 2004

Volume: 43

Issue: 1

Pages: 181-188

ISSN (print): 0020-1669

ISSN (electronic): 1520-510X

Publisher: American Chemical Society


DOI: 10.1021/ic030254w


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