Synthesis, crystal structure and photoconductivity of the first [60]fullerene complex with metal diethyldithiocarbamate: {CuII(dedtc) 2}2·C60

Dmitri V. Konarev; Andrey Y. Kovalevsky; Dmitri V. Lopatin; Alexey V. Umrikhin; Evgeniya I. Yudanova; Philip Coppens; Rimma N. Lyubovskaya; Gunzi Saito

doi:10.1039/b500314h

Synthesis, crystal structure and photoconductivity of the first [60]fullerene complex with metal diethyldithiocarbamate: {Cu^II(dedtc) ₂}₂·C₆₀

Dmitri V. Konarev, Andrey Y. Kovalevsky, Dmitri V. Lopatin, Alexey V. Umrikhin, Evgeniya I. Yudanova, Philip Coppens, Rimma N. Lyubovskaya, Gunzi Saito

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Abstract

The first molecular complex of fullerene C₆₀ with metal dithiocarbamate, namely, {Cu^II(dedtc)₂} ₂·C₆₀ (dedtc: diethyldithiocarbamate) (1) was obtained as single crystals. Butterfly-shaped Cu^II(dedtc)₂ molecules efficiently co-crystallized with spherical fullerene molecules to form a layered structure, in which closely packed hexagonal C₆₀ layers alternate with the layers composed of Cu^II(dedtc)₂ dimers. The formation of the complex with C₆₀ changes geometry and the EPR spectrum of starting Cu^II(dedtc)₂. Magnetic susceptibility of 1 follows the Curie-Weiss law in the 300-1.9 K range with the negative Weiss constant of -2.5 K showing a weak antiferromagnetic interaction between Cu^II centers in the dimers. The crystals of 1 have low dark conductivity of 10^-11 S cm^-1, which is consistent with a neutral ground state of the complex. Illumination of the crystals by white light increases the photocurrent by 20-50 times. The photoconductivity spectrum of 1 has a maximum at 470 nm showing that both intermolecular charge transfer between neighboring C⁶⁰ molecules and photoexcitation of Cu ^II(dedtc)₂ can contribute to photogeneration of free charge carriers. The effect of a weak magnetic field with B_o< 0.5 T on the photoconductivity of 1 has been found.

Original language	English
Pages (from-to)	1821-1825
Number of pages	5
Journal	Dalton Transactions
Issue number	10
DOIs	https://doi.org/10.1039/b500314h
State	Published - May 21 2005
Externally published	Yes

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@article{9a98d6b8c4ea44fda7406976a1f68b93,

title = "Synthesis, crystal structure and photoconductivity of the first [60]fullerene complex with metal diethyldithiocarbamate: {CuII(dedtc) 2}2·C60",

abstract = "The first molecular complex of fullerene C60 with metal dithiocarbamate, namely, {CuII(dedtc)2} 2·C60 (dedtc: diethyldithiocarbamate) (1) was obtained as single crystals. Butterfly-shaped CuII(dedtc)2 molecules efficiently co-crystallized with spherical fullerene molecules to form a layered structure, in which closely packed hexagonal C60 layers alternate with the layers composed of CuII(dedtc)2 dimers. The formation of the complex with C60 changes geometry and the EPR spectrum of starting CuII(dedtc)2. Magnetic susceptibility of 1 follows the Curie-Weiss law in the 300-1.9 K range with the negative Weiss constant of -2.5 K showing a weak antiferromagnetic interaction between CuII centers in the dimers. The crystals of 1 have low dark conductivity of 10-11 S cm-1, which is consistent with a neutral ground state of the complex. Illumination of the crystals by white light increases the photocurrent by 20-50 times. The photoconductivity spectrum of 1 has a maximum at 470 nm showing that both intermolecular charge transfer between neighboring C60 molecules and photoexcitation of Cu II(dedtc)2 can contribute to photogeneration of free charge carriers. The effect of a weak magnetic field with Bo< 0.5 T on the photoconductivity of 1 has been found.",

author = "Konarev, {Dmitri V.} and Kovalevsky, {Andrey Y.} and Lopatin, {Dmitri V.} and Umrikhin, {Alexey V.} and Yudanova, {Evgeniya I.} and Philip Coppens and Lyubovskaya, {Rimma N.} and Gunzi Saito",

year = "2005",

month = may,

day = "21",

doi = "10.1039/b500314h",

language = "English",

pages = "1821--1825",

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issn = "1477-9226",

publisher = "Royal Society of Chemistry",

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T1 - Synthesis, crystal structure and photoconductivity of the first [60]fullerene complex with metal diethyldithiocarbamate

T2 - {CuII(dedtc) 2}2·C60

AU - Konarev, Dmitri V.

AU - Kovalevsky, Andrey Y.

AU - Lopatin, Dmitri V.

AU - Umrikhin, Alexey V.

AU - Yudanova, Evgeniya I.

AU - Coppens, Philip

AU - Lyubovskaya, Rimma N.

AU - Saito, Gunzi

PY - 2005/5/21

Y1 - 2005/5/21

N2 - The first molecular complex of fullerene C60 with metal dithiocarbamate, namely, {CuII(dedtc)2} 2·C60 (dedtc: diethyldithiocarbamate) (1) was obtained as single crystals. Butterfly-shaped CuII(dedtc)2 molecules efficiently co-crystallized with spherical fullerene molecules to form a layered structure, in which closely packed hexagonal C60 layers alternate with the layers composed of CuII(dedtc)2 dimers. The formation of the complex with C60 changes geometry and the EPR spectrum of starting CuII(dedtc)2. Magnetic susceptibility of 1 follows the Curie-Weiss law in the 300-1.9 K range with the negative Weiss constant of -2.5 K showing a weak antiferromagnetic interaction between CuII centers in the dimers. The crystals of 1 have low dark conductivity of 10-11 S cm-1, which is consistent with a neutral ground state of the complex. Illumination of the crystals by white light increases the photocurrent by 20-50 times. The photoconductivity spectrum of 1 has a maximum at 470 nm showing that both intermolecular charge transfer between neighboring C60 molecules and photoexcitation of Cu II(dedtc)2 can contribute to photogeneration of free charge carriers. The effect of a weak magnetic field with Bo< 0.5 T on the photoconductivity of 1 has been found.

AB - The first molecular complex of fullerene C60 with metal dithiocarbamate, namely, {CuII(dedtc)2} 2·C60 (dedtc: diethyldithiocarbamate) (1) was obtained as single crystals. Butterfly-shaped CuII(dedtc)2 molecules efficiently co-crystallized with spherical fullerene molecules to form a layered structure, in which closely packed hexagonal C60 layers alternate with the layers composed of CuII(dedtc)2 dimers. The formation of the complex with C60 changes geometry and the EPR spectrum of starting CuII(dedtc)2. Magnetic susceptibility of 1 follows the Curie-Weiss law in the 300-1.9 K range with the negative Weiss constant of -2.5 K showing a weak antiferromagnetic interaction between CuII centers in the dimers. The crystals of 1 have low dark conductivity of 10-11 S cm-1, which is consistent with a neutral ground state of the complex. Illumination of the crystals by white light increases the photocurrent by 20-50 times. The photoconductivity spectrum of 1 has a maximum at 470 nm showing that both intermolecular charge transfer between neighboring C60 molecules and photoexcitation of Cu II(dedtc)2 can contribute to photogeneration of free charge carriers. The effect of a weak magnetic field with Bo< 0.5 T on the photoconductivity of 1 has been found.

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DO - 10.1039/b500314h

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ER -

Synthesis, crystal structure and photoconductivity of the first [60]fullerene complex with metal diethyldithiocarbamate: {Cu^II(dedtc) ₂}₂·C₆₀

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