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Studies on Synthesis, Crystal Structure and Physical Chemistry Properties of the Heteropoly Compounds Containing Molybdenum

Author: HuangJinFeng
Tutor: LinShen；WangShiMing
School: Fujian Normal University
Course: Physical and chemical
Keywords: Heteropoly complexes of molybdenum series Crystal structure Charge transfer salt Photochromic
CLC: O641.4
Type: Master's thesis
Year: 2002
Downloads: 145
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Abstract


This thesis is divided into two parts : a . Rare Earth - molybdenum heteropoly complexes synthesis and structure determination of crystals synthesized rare earth has not been reported - molybdenum heteropoly complexes : ( NH 4 ) 11 Gd [ Gd < sub> 4 PMo 29 O 100 (H 2 O) 23 ) · 25.75H < sub> 2 < / sub > O ( complex ( 1 )) and (NH 4 < / sub > ) , 12 H 10 [ Nd the 4 Mo 29 O 104 (H 2 O) 12 ] · 22H 2 < / sub> O ( 2)) complexes ( crystal X- ray diffraction experiments , structural analysis results show that : the two crystals belong triclinic crystal system , space group is Pī . The mating was ( 1 ) : a = 16.9568 (5 ) ( ? ), B = 18.8631 ( 6 ) ( ? ) , C = 24.1640 ( 8 ) ( ? ), Α = 100.110 ( 1 ) ° , β = 92.330 ( 1 ) °, γ = 113.368 (1) °, Mr = 6245.25, wR = 0.1960, Z = 2. The mating was ( 2 ) : a = 17.04 ( 1 ) ( ? ) , B = 18.98 ( 5 ) ( ? ) , C = 24.24 ( 6 ) ( ? ) , Α = 100.18 ( ) °, β = 9224 ( 3 ) °, γ = 113.04 (3) °, Mr = 5862.35, wR = 0.2176, Z = 2. II. The synthesis and characterization of molybdenum-based heteropolyacids (salt ) charge-transfer complexes ( complexes 1-6) synthesized with different vanadium substituted phosphomolybdic heteropoly acid ( HmPMo 12- n < / sub > VnO , < sub> 40 · XH 2 O m = 5,7,9 n = 2,4,6) as an electron acceptor , the different organisms (quinoline , N-methyl pyrrolidone , N , N- aminoxylene ) photochromic light electron donor charge-transfer complexes ( 1-5) ; rare earth molybdenum silicon miscellaneous formate (( the NH 4 < / sub >) 13 < / sub > [ Y ( SiMo 11 O 39 < / sub > ) , 2 ] · 36H 2 O ) as an electron acceptor quinoline as the the light electron donor photochromic charge transfer complexes ( 6) . IR, elemental analysis , ESR electronic spectra of the diffuse reflectance of solid , XRD , TG were characterized . The results show that : the synthesis of charge transfer complexes remain heteropolyanion Keggin structure , but the bond strength change , indicating that the interaction between the organic electron donor heteropolyanion under photoexcitation , the organic cation complexes with heteropolyanions occurs between the charge transfer, having photochromic properties .

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CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Structural Chemistry > Complex chemistry ( coordination chemistry )
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