Semiconducting tellurium-iron-copper carbonyl polymers |
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Authors: | Shieh Minghuey Ho Chia-Hua Sheu Wen-Shyan Chen Bo-Gaun Chu Yen-Yi Miu Chia-Yeh Liu Hsiang-Lin Shen Chih-Chiang |
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Affiliation: | Department of Chemistry, National Taiwan Normal University Taipei 116, Taiwan, Republic of China. mshieh@ntnu.edu.tw |
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Abstract: | The unprecedented ternary Te-Fe-Cu chain polymers [{Et4N}{TeFe3(CO)9Cu}]infinity and [{TeFe3(CO)9Cu2}(mu-4,4'-dipyridyl)1.5]infinity were prepared from the self-assembly of [Et4N]2[TeFe3(CO)9] with [Cu(MeCN)4][BF4] in THF or in the presence of 4,4'-dipyridyl in THF. These two chain polymers, which can also be constructed from the precursor complex TeFe3(CO)9Cu2(MeCN)2, show semiconducting behaviors with low band gaps of 0.59 and 0.41 eV, respectively. In addition, their conductivity and the effect of the bridging ligand are further elucidated by theoretical calculations. |
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