TY - JOUR
T1 - New Te-based counter anions for conducting cation radical salts
T2 - ISCOM 2001
AU - Fujiwara, M.
AU - Tajima, N.
AU - Imakubo, T.
AU - Tamura, M.
AU - Kato, R.
N1 - Funding Information:
This work was partially supported by the Sumitomo Foundation and a Grant-in-Aid for Scientific Research on Priority Areas (No. 10149103 “Metal-assembled Complexes”) from Ministry of Education, Science, Sports and Culture, Japan.
PY - 2003/3/13
Y1 - 2003/3/13
N2 - Synthesis, structure, and resistivity measurements of several cation radical salts formed by the organic donors TMTTF, EDT-TTF, ET and BETS with new Te-based planar dianions, TeI42- and Te2I62- are reported. The anion sheets in these salts consist of discrete mono- or dinuclear anions. Crystal structure of (ET)4TeI4 (1) is based on the "herring bone" arrangement of ET molecules, similar to the α-type. Compound 1 is a semiconductor (ρr.t. = 0.5Ωcm) and shows a transition to the insulating state at 210 K. (ET)5Te2I6 (2) consists of alternating arrangement of the θ-type donor layer and the checker-like anion sheet. With decreasing temperature, the resistivity of 2 (ρr.t. = 2Ω cm) shows a gradual increase followed by a sharp upturn at 110 K. (BETS)5Te2I6 (3) is isostructural with 2. This salt is metallic down to 120 K (ρr.t. = 0.02Ω cm), and shows a gradual increase of the resistivity followed by a clear transition to the insulating state at about 60K.
AB - Synthesis, structure, and resistivity measurements of several cation radical salts formed by the organic donors TMTTF, EDT-TTF, ET and BETS with new Te-based planar dianions, TeI42- and Te2I62- are reported. The anion sheets in these salts consist of discrete mono- or dinuclear anions. Crystal structure of (ET)4TeI4 (1) is based on the "herring bone" arrangement of ET molecules, similar to the α-type. Compound 1 is a semiconductor (ρr.t. = 0.5Ωcm) and shows a transition to the insulating state at 210 K. (ET)5Te2I6 (2) consists of alternating arrangement of the θ-type donor layer and the checker-like anion sheet. With decreasing temperature, the resistivity of 2 (ρr.t. = 2Ω cm) shows a gradual increase followed by a sharp upturn at 110 K. (BETS)5Te2I6 (3) is isostructural with 2. This salt is metallic down to 120 K (ρr.t. = 0.02Ω cm), and shows a gradual increase of the resistivity followed by a clear transition to the insulating state at about 60K.
KW - Anion networks
KW - Crystal structure
KW - Electrical resistivity
KW - Molecular conductors based on TTF analogues
KW - Te-based planar dianions
UR - http://www.scopus.com/inward/record.url?scp=0037435240&partnerID=8YFLogxK
U2 - 10.1016/S0379-6779(02)00299-0
DO - 10.1016/S0379-6779(02)00299-0
M3 - Conference article
AN - SCOPUS:0037435240
SN - 0379-6779
VL - 133-134
SP - 459
EP - 461
JO - Synthetic Metals
JF - Synthetic Metals
Y2 - 10 September 2001 through 14 September 2001
ER -