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New antimony molybdenum heteropoly compounds and charge- transfer salts

Author: LiuXueMei
Tutor: GaoQuanChang；XueGangLin
School: Northwestern University
Course: Physical and chemical
Keywords: Heteropoly compounds Charge-transfer salts TMT-TTF Ferrocene Molybdenum Antimony Synthesis Crystal structure
CLC: O611.3
Type: Master's thesis
Year: 2005
Downloads: 71
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Abstract


Heteropoly compounds due to the diversity of its composition and structure, and its potential applications in areas such as catalysis, materials science, environmental protection, and medical cause of wide interest, has a special structure and properties of novel heteropoly compounds design synthesis, structure and characterization has been the focus and difficulty of research in this field, has attracted the attention of many scientists in the field of. This thesis is the work of two research directions: a prepared tetramethyl mercapto base four-tetrathiafulvalene, and ferrocene electron donor heteropolyanion electron acceptor 2 new charge-transfer salts, its structure and properties were characterized. Charge-transfer salts: (TMT-TTF) 4 [PMo 12 O 40 ] (1) [NBu 4 ] 6 [Fe (C 5 H 5 ) 2 ] [PMo 12 from O 40 the the 2 (2) charge-transfer salt (TMT-TTF) 4 [PMo 12 O < sub> 40 ] in the organic layer and the inorganic layer are alternately arranged by the three-dimensional stacking structure to the weak interaction between the body between the S ... S interactions, as well as an organic layer and an inorganic layer formed. Two independent TMT-TTF molecules are oxidized to 0.5 and 1 price each anion around 8 TMT-TTF molecule ligand. In 110K, ESR spectra showed the discrete TMT-TTF and Mo 5 signal, anion [PMo 12 O 40 ] 3 - is reduced to [PMO 12 O 40 ] 4 - . The conductivity of the compound at room temperature for approximately 10 -3 SCM -1 , showing the behavior of the semiconductor. Charge-transfer salt [NBu 4 ] 6 [the Fe (C 5 H 5 ) 2 ] [PMo 12 from O 40 ] 2 of the crystal structure, the (001) crystal face of [Fe (C 5 H 5 ) 2 ] layer heteropoly anion layers are arranged alternately, each [Fe (C 5 H 5 ) 2 ] around the four adjacent Heteropolyanion ferrocene heteropolyanion between significantly weak interaction. Second, the synthesis of a new heteropolyanion building units, [Mo 18 Sb Ⅴ 4 Sb Ⅲ 2 (H 2 O) 2 O 73 ] 12 - , prepared them with five series of complexes of transition metal ions, were used to characterize the structure and nature of. Molybdenum, antimony supramolecular compounds are as follows: (NH 4 ) 12 [Mo 18 Sb Ⅴ 4 < / sub> Sb Ⅲ 2 (H 2 O) 2 O 73 ] 2 · 12H 2 O (3) (NH 4 ) 22 Mn (H 2 O) 2 [MO 18 Sb Ⅴ 4 Sb Ⅲ 2 (H 2 O) 2 O 73 ] 2 · 26H 2 O (4) (NH 4 ) 21 Fe 3 (H 2 O) 2 [Mo 18 Sb Ⅴ 4 Sb Ⅲ 2 (H 2 O) 2 O 73 2 · 25H 2 O (5 ) (NH 4 ) 22 Cu (H 2 O) 2 [Mo 18 Sb Ⅴ 4 Sb Ⅲ 2 (H 2 O) 2 O 73 ] 2 · 24H 2 O (6) (NH 4 ) 22 Co (H 2 O) 2 [Mo 18 Sb Ⅴ 4 Sb Ⅲ 2 (H 2 O) 2 O 73 ] 2 · 24H 2 O (7) (NH 4 ) 20 [Ni (H 2 O) 6 ] 2 {[Ni (H 2 O) 5 Mo 18 Sb 4 Ⅴ Sb 2 O 73 (OH) (H 2 < / sub> O)] [Mo 18 Sb 4 Ⅴ Sb 2 Ⅲ O 73 (OH) (H 2 O)] · 24H 2 O (8)

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