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Issue 10, 2011
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Crystal structure and carrier transport properties of a new 3D mixed-valence Cu(I)–Cu(II) coordination polymer including pyrrolidine dithiocarbamate ligand

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Abstract

A novel mixed-valence Cu(I)–Cu(II) coordination polymer having an infinite three-dimensional (3D) structure, {[CuI4CuII2Br4(Pyr-dtc)4]·CHCl3}n (1) (Pyr-dtc = pyrrolidine dithiocarbamate), has been prepared and structurally characterized viaX-ray diffraction. This complex consists of 1D Cu(I)–Br chains and bridging mononuclear copper(II) units of CuII(Pyr–dtc)2, which form an infinite 3D network. A magnetic study indicates that this complex includes copper(II) ions exhibiting a weak antiferromagnetic interaction (θ = −0.086 K) between the unpaired electrons of the copper(II) ions present in the diamagnetic Cu(I)–Br chains. The carrier transport properties of 1 are investigated using an impedance spectroscopy technique and flash-photolysis time-resolved microwave conductivity measurement (FP-TRMC). The impedance spectroscopy reveals that this complex exhibits intriguing semiconducting properties at a small activation energy (Ea = 0.29 eV (bulk)). The sum of the mobilities of the negative and positive carriers estimated via FP-TRMC is Σμ ∼ 0.4 cm2 V−1s−1.

Graphical abstract: Crystal structure and carrier transport properties of a new 3D mixed-valence Cu(i)–Cu(ii) coordination polymer including pyrrolidine dithiocarbamate ligand

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Publication details

The article was received on 18 Aug 2010, accepted on 05 Nov 2010 and first published on 22 Dec 2010


Article type: Paper
DOI: 10.1039/C0DT01065K
Citation: Dalton Trans., 2011,40, 2218-2224
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    Crystal structure and carrier transport properties of a new 3D mixed-valence Cu(I)–Cu(II) coordination polymer including pyrrolidine dithiocarbamate ligand

    T. Okubo, N. Tanaka, K. H. Kim, H. Anma, S. Seki, A. Saeki, M. Maekawa and T. Kuroda-Sowa, Dalton Trans., 2011, 40, 2218
    DOI: 10.1039/C0DT01065K

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