Journal of the Korean Chemical Society (대한화학회지)

Korean Chemical Society (대한화학회)
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Synthesis and Molecular Structure of An Octanuclear Oxomolybdem(V) Cluster Compound and Its Sol-Gel Application to magnetoresistant Oxides

몰리브데늄 옥소 알콕소 뭉치 화합물의 합성과 분자구조 및 졸-겔 법에 의한 자기저항 산화물제조

  • Lee, Jung Young (Department of Chemistry, Hankuk University of Foreign Studies) ;
  • Lee, Bo Wha (Department of Electronic Physics, Hankuk University of Foreign Studies) ;
  • Ha, Hyun Joon (Department of Chemistry, Hankuk University of Foreign Studies) ;
  • Chae, Hee K. (Department of Chemistry, Hankuk University of Foreign Studies)
  • 이정영 (한국외국어대학교 화학과) ;
  • 이보화 (한국외국어대학교 전자물리학과) ;
  • 하현준 (한국외국어대학교 화학과) ;
  • 채희권 (한국외국어대학교 화학과)
  • Published : 20010600
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References

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  6. Addition of the mixture of brown $Mo(O)Cl_3$ (1.00g, 4.58 mmol) in 100mL of methanol to the colorless solution if $ K_3[(OCH_2CH_2)_3N$ (1.20g, 4.77mmol) in 50mL of methanol gave orange crystals of complex 1(2.20g, 1.26mmol) with 27.5% yield based on molybdenum. IR(Kbr Pellet, TEX>$cm^{-1} $0:3433(br),2933(w), 1632(br), 1030(w), 970(s), 717(m), 681(m), 550(m), 519(m), 494(m), 464(w), Anal Found: C, 1176: H, 3.49: Cl, 4.61. Calc. for $C-16H_58O-33Cl_2Mo_8 $:C, 12.00;H, 3.66:Cl, 4.43. Pink rod-shape crystals of $ Mo_8(O)_(μ_3-O)_4(μ_2-O)_4(μ_3OCH_3)_2(μ-OCH_3)_4Cl(HOCH_3)_4 · 6(CH_3OH)] were anayzed at 208±1 K : triclinic, space group P(-1) with a=7.8373(4) Å, b=10.1107(5) Å, c=15,0384(7) , α=92.9500(10)°, β=98.4170(10)°, γ=92.2460(10)°, V=11.75.94(10) Å3. Z=1. $d_calcd=2.261 g/㎤, μ_a(Mo Kα)=2.263 mm^{-1}$, gokness of fit on F²=1.000, R=0.0351 and R_w=0.0884$
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  13. The definition of the manitude of MR : MR=Δρ/ρ=(0)[ρ(H) - ρ(0)]/ρ(0) where ρ(0) is the zero fisistivity and ρ(H) is th resistivity under magnetic field