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One-dimensional CuBr4(2-) Ion Array and CuBr3- Ion Chain Included in the Pi Conducting Framework Composed of bis(methylthio)tetrathiafulvalenothioquinone-1,3-dithiocarbonatodithiolemethide Molecules

One-dimensional CuBr4(2-) Ion Array and CuBr3- Ion Chain Included in the Pi Conducting Framework Composed of bis(methylthio)tetrathiafulvalenothioquinone-1,3-dithiocarbonatodithiolemethide Molecules

Takuya Matsumoto, Yohsuke Kamada, Toyonari Sugimoto, Toshiji Tada, Satoru Noguchi, Hiroyuki Nakazumi, Takashi Kawakami, Kizashi Yamaguchi, Motoo Shiro

Inorg Chem. 2003 Dec 29;42(26):8638-45.

PMID: 14686840

Abstract:

The reaction of a new donor molecule having a planar but largely bent skeleton, bis(methylthio)tetrathiafulvalenothioquinone-1,3-dithiocarbonatodithiolemethide (1), with CuBr(2) in CH(3)CN/CS(2) afforded a black-colored crystal with a formula of 1(4).CuBr(4).2CuBr(3). In the crystal 1 molecules are one-dimensionally stacked to form half-cut pipelike columns, which are arranged to construct two different shapes of channels included by a one-dimensional array of CuBr(4)(2)(-) ions and a bibromide-bridged linear chain of CuBr(3)(-) ions with a square-pyramidal geometry at the Cu atom, [CuBr(3)(-)](n)(), respectively. The room-temperature electrical conductivity on the single crystal of 1(4).CuBr(4).2CuBr(3) was 2.0 x 10(-)(2) S cm(-)(1), and the temperature dependence of electrical conductivity was semiconducting with a large activation energy of 160 meV. The interactions between the neighboring Cu(II) d spins in the one-dimensional S = 1/2 spin systems due to CuBr(4)(2)(-) ions and CuBr(3)(-) ions in [CuBr(3)(-)](n)() were both antiferromagnetic, and the magnitudes were moderate (Weiss temperature, THETAV; = -18 K) in the former spin system and fairly large (coupling constant, J/k(B) = -120 K) in the latter spin system, which was in marked contrast to a moderate and ferromagnetic [CuBr(3)(-)](n)() chain in the cyclohexylammonium salt already known.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP138182204	6-Chloro-3-indolyl-β-D-glucuronide cyclohexylammonium salt		138182-20-4	Price

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