(DT-TTF)-M(mnt)2 family of compounds

E. Ribera; C. Rovira; J. Veciana; J. Tarres; E. Canadell; R. Rousseau; E. Molins; M. Mas; J. P. Schoeffel; J. P. Pouget; J. Morgado; V. Gama; R. T. Henriques; M. Almeida

doi:10.1016/S0379-6779(98)00286-0

(DT-TTF)-M(mnt)₂ family of compounds

E. Ribera, C. Rovira, J. Veciana, J. Tarres, E. Canadell, R. Rousseau, E. Molins, M. Mas, J. P. Schoeffel, J. P. Pouget, J. Morgado, V. Gama, R. T. Henriques, M. Almeida

Research output: Contribution to journal › Conference article › peer-review

13 Scopus citations

Abstract

The family of charge transfer salts (DT-TTF)_nM(mnt)₂, with M=Au, Ni, Pt, Fe and Co, shows a wide range of interesting electrical and magnetic properties. Salts with M=Au, Ni and Pt, with n=2 are isostructural. The Au compound, is a semiconductor and presents a localised regime of charge carriers in DT-TTF chains, behaving as a spin-ladder system. The Ni and Pt analogues have a delocalised regime with higher conductivity at room temperature and a transition to an insulator state at 120 and 127 K respectively. The Fe and Co compounds form ionic salts with n=1 and present poorer semiconducting properties. For M=Fe, crystals of different morphologies and the observation of three different transport properties denote the existence of different phases.

Original language	English
Pages (from-to)	1743-1746
Number of pages	4
Journal	Synthetic Metals
Volume	102
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(98)00286-0
State	Published - 1999
Externally published	Yes
Event	Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) - Montpellier Duration: Jul 12 1998 → Jul 18 1998

Funding

The susceptibility drop below 40 K in the Ni compound and below 20 K in the Pt one, are dtected by changes of g-values. While further studies are necessary in order to clarify the nature of these transitions, it should be kept in mind that, as shown by the transfer integrals calculations, any minor change in the M(mnt), stacks can induce drastic changes in the electronic structure of the DT-TTF stacks. Conclusion A rich variety of phases and physical behaviours is observed in the new family (DT-TTF),,M(mnt), of charge transfer solids. The study of the isostructural compounds with n=2 and with a ladder arrangement of the donors, allows the observation of drastic changes in the magnetic and electrical properties, ranging from spin ladders to conduction electrons interacting with localised magnetic moments. These variations are both due to the change from diamagnetic to paramagnetic anions, and to small differences in the intermolecular overlap between DT-TTF donors. Acknowledgements This work was partially supported in Spain from DGES projects PB-96-0859 and PB96-0872-01, in Portugal by PRAXIS XXI under contract nr. 212.1 /QUI/203/94. The cooperation between Portuguese and Spanish teams was supported by JNICT-CSIC bilateral agreement under project 423/94.

Funders	Funder number
DGES	423/94, 212.1 /QUI/203/94, PB-96-0859, PB96-0872-01

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title = "(DT-TTF)-M(mnt)2 family of compounds",

abstract = "The family of charge transfer salts (DT-TTF)nM(mnt)2, with M=Au, Ni, Pt, Fe and Co, shows a wide range of interesting electrical and magnetic properties. Salts with M=Au, Ni and Pt, with n=2 are isostructural. The Au compound, is a semiconductor and presents a localised regime of charge carriers in DT-TTF chains, behaving as a spin-ladder system. The Ni and Pt analogues have a delocalised regime with higher conductivity at room temperature and a transition to an insulator state at 120 and 127 K respectively. The Fe and Co compounds form ionic salts with n=1 and present poorer semiconducting properties. For M=Fe, crystals of different morphologies and the observation of three different transport properties denote the existence of different phases.",

author = "E. Ribera and C. Rovira and J. Veciana and J. Tarres and E. Canadell and R. Rousseau and E. Molins and M. Mas and Schoeffel, {J. P.} and Pouget, {J. P.} and J. Morgado and V. Gama and Henriques, {R. T.} and M. Almeida",

year = "1999",

doi = "10.1016/S0379-6779(98)00286-0",

language = "English",

volume = "102",

pages = "1743--1746",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier",

number = "1-3",

note = "Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98) ; Conference date: 12-07-1998 Through 18-07-1998",

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TY - JOUR

T1 - (DT-TTF)-M(mnt)2 family of compounds

AU - Ribera, E.

AU - Rovira, C.

AU - Veciana, J.

AU - Tarres, J.

AU - Canadell, E.

AU - Rousseau, R.

AU - Molins, E.

AU - Mas, M.

AU - Schoeffel, J. P.

AU - Pouget, J. P.

AU - Morgado, J.

AU - Gama, V.

AU - Henriques, R. T.

AU - Almeida, M.

PY - 1999

Y1 - 1999

N2 - The family of charge transfer salts (DT-TTF)nM(mnt)2, with M=Au, Ni, Pt, Fe and Co, shows a wide range of interesting electrical and magnetic properties. Salts with M=Au, Ni and Pt, with n=2 are isostructural. The Au compound, is a semiconductor and presents a localised regime of charge carriers in DT-TTF chains, behaving as a spin-ladder system. The Ni and Pt analogues have a delocalised regime with higher conductivity at room temperature and a transition to an insulator state at 120 and 127 K respectively. The Fe and Co compounds form ionic salts with n=1 and present poorer semiconducting properties. For M=Fe, crystals of different morphologies and the observation of three different transport properties denote the existence of different phases.

AB - The family of charge transfer salts (DT-TTF)nM(mnt)2, with M=Au, Ni, Pt, Fe and Co, shows a wide range of interesting electrical and magnetic properties. Salts with M=Au, Ni and Pt, with n=2 are isostructural. The Au compound, is a semiconductor and presents a localised regime of charge carriers in DT-TTF chains, behaving as a spin-ladder system. The Ni and Pt analogues have a delocalised regime with higher conductivity at room temperature and a transition to an insulator state at 120 and 127 K respectively. The Fe and Co compounds form ionic salts with n=1 and present poorer semiconducting properties. For M=Fe, crystals of different morphologies and the observation of three different transport properties denote the existence of different phases.

UR - http://www.scopus.com/inward/record.url?scp=0033137605&partnerID=8YFLogxK

U2 - 10.1016/S0379-6779(98)00286-0

DO - 10.1016/S0379-6779(98)00286-0

M3 - Conference article

AN - SCOPUS:0033137605

SN - 0379-6779

VL - 102

SP - 1743

EP - 1746

JO - Synthetic Metals

JF - Synthetic Metals

IS - 1-3

T2 - Proceedings of the 1998 International Conference on Science and Technology of Synthetic Metals (ICSM-98)

Y2 - 12 July 1998 through 18 July 1998

ER -

(DT-TTF)-M(mnt)₂ family of compounds

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