Ferromagnetic interaction and metallic conductivity of radical ion salts (DIEDO) 2M(mnt) 2 (M=Ni, Pt)

(DIEDO) 2M(mnt) 2 (M=Ni, Pt; DIEDO=4,5-diiodo-4′,5′-ethylenedioxytetrathiafulvalene; mnt: maleonitriledithiolate) composed of transition metal complexes and iodine-bonded donor have a unique structure featured with strong coordination-bond-like interaction between iodo group of donor and cyano group...

Full description

Saved in:
Bibliographic Details
Published in:Synthetic metals 2003-03, Vol.133, p.539-541
Main Authors: Nishijo, J., Ogura, E., Yamaura, J., Miyazaki, A., Enoki, T., Takano, T., Kuwatani, Y., Iyoda, M.
Format: Article
Language:English
Subjects:
Ferromagnetic interaction
Molecular magnet
Organic metal
π–d interaction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:(DIEDO) 2M(mnt) 2 (M=Ni, Pt; DIEDO=4,5-diiodo-4′,5′-ethylenedioxytetrathiafulvalene; mnt: maleonitriledithiolate) composed of transition metal complexes and iodine-bonded donor have a unique structure featured with strong coordination-bond-like interaction between iodo group of donor and cyano group of anion. It consists of two donor chains sandwiched between anion chains. The salts are metallic down to 100 K, followed by an onset of a metal–insulator (M–I) transition. T MI becomes lowered at high pressures (21 K at P>11 kbar). The magnetic susceptibility suggests the presence of ferromagnetic interactions ( J∼20 K) between localized magnetic moments of M(mnt) 2 −, which interact with conduction electrons. The origin of ferromagnetic interactions is explained by McConnell’s first model and small overlaps between SOMOs of M(mnt) 2 −.
ISSN:0379-6779
1879-3290
DOI:10.1016/S0379-6779(02)00283-7