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Crystal structures of two allotropic forms of Na2CoP2O7

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Abstract

Na2CoP2O7 may be prepared in two allotropie forms:I, rose,M r =278.85, triclinic, P1,a=9.735(2),b=10.940(3),c=12.289(4) Å,α=148.78,β=121.76(1), γ=68.38(2)°,V=566.8(2) Å3,Z=4,D meas=3.28(5) g cm−3,D calc=3.267 g cm−3, λ(MoKα)=0.71069 Å,μ=37.12 cm−1, F(000)=540,T=298 K,R=5.4% for 2911 observed reflections; andII, blue,M r =278.85, orthorhombic, P21cn,a=7.713(2) Å,b=10.271(4),c=15.378(6)°,V=1218.2(8) Å3,Z=8,D meas=3.06(5) g cm−3,D calc=3.040 g cm−1, λ(MoK α) Å,μ=34.55 cm−1, F(000)=1080,T=298 K,R=9.9% for 1450 observed reflections. Cobalt displays octahedral coordination to six oxygen atoms in the rose form whereas the metal coordination is tetrahedral in the blue form.

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Authors and Affiliations

  1. Laboratoire de Chimie du Solide Appliquée, Département de Chimie, Faculté des Sciences, Université Mohammed V, Avenue Ibn Batouta, Rabat, Maroc

    Fatima Erragh, Ali Boukhari & Brahim Elouadi

  2. Department of Chemistry, Oklahoma State University, 74078, Stillwater, Oklahoma

    Elizabeth M. Holt

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  1. Fatima Erragh
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  2. Ali Boukhari
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  3. Brahim Elouadi
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  4. Elizabeth M. Holt
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Erragh, F., Boukhari, A., Elouadi, B. et al. Crystal structures of two allotropic forms of Na2CoP2O7 . Journal of Crystallographic and Spectroscopic Research 21, 321–326 (1991). https://doi.org/10.1007/BF01156084

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  • DOI: https://doi.org/10.1007/BF01156084

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