TY - JOUR
T1 - [Ni(dmit)2] salts with supramolecular cation structure
AU - Akutagawa, Tomoyuki
AU - Nakamura, Takayoshi
N1 - Funding Information:
The authors wish to acknowledge the invaluable collaboration of the colleagues and students whose names appear in many of the articles cited. This work was partly supported by the Grant-in-Aid for Science Research from the Ministry of Education, Science, Sports and Culture and by the Proposal-Based New Industry Creative Type Technology R&D Promotion Program from the New Energy and Industrial Technology Development Organization (NEDO) in Japan.
PY - 2000
Y1 - 2000
N2 - The dithiolate complex, [Ni(dmit)2] (dmit = 2-thioxo-1,3-dithiol-4,5-dithiolate) is an organic π-molecule which gives highly conducting salts with closed shell cations or organic donors. We have found that crown ether macrocycles can be incorporated into the salts in which the crown ethers include alkali metal cations forming supramolecular cation (SC) structures. The SC structural diversity was observed to depend on the size of the crown ether and cation. Three kinds of crown ethers, 12-crown-4, 15-crown-5 and 18-crown-6 in addition to an acyclic polyether analog of pentaetyleneglycol were incorporated in the conducting [Ni(dmit)2] crystals. The structure of these crystals will be described with emphasis on both the structures of SC and Ni(dmit)2 conducting layers. In one example, the crown ether forms a channel in which the cation has a translational freedom. The cation, otherwise merely forms a periodic Coulomb potential in the crystal, can influence the electrical conduction through the motion in the channel. The monovalent [Ni(dmit)2] salts, which are possible candidates for molecular magnets will be described on a salt having SC structure.
AB - The dithiolate complex, [Ni(dmit)2] (dmit = 2-thioxo-1,3-dithiol-4,5-dithiolate) is an organic π-molecule which gives highly conducting salts with closed shell cations or organic donors. We have found that crown ether macrocycles can be incorporated into the salts in which the crown ethers include alkali metal cations forming supramolecular cation (SC) structures. The SC structural diversity was observed to depend on the size of the crown ether and cation. Three kinds of crown ethers, 12-crown-4, 15-crown-5 and 18-crown-6 in addition to an acyclic polyether analog of pentaetyleneglycol were incorporated in the conducting [Ni(dmit)2] crystals. The structure of these crystals will be described with emphasis on both the structures of SC and Ni(dmit)2 conducting layers. In one example, the crown ether forms a channel in which the cation has a translational freedom. The cation, otherwise merely forms a periodic Coulomb potential in the crystal, can influence the electrical conduction through the motion in the channel. The monovalent [Ni(dmit)2] salts, which are possible candidates for molecular magnets will be described on a salt having SC structure.
KW - Crown ether
KW - Crystal structure
KW - Electrical conductivity
KW - Supramolecular cation
KW - [Ni(dmit)] complex
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U2 - 10.1016/S0010-8545(99)00231-3
DO - 10.1016/S0010-8545(99)00231-3
M3 - Review article
AN - SCOPUS:0033829946
VL - 198
SP - 297
EP - 311
JO - Coordination Chemistry Reviews
JF - Coordination Chemistry Reviews
SN - 0010-8545
IS - 1
ER -