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  • Crystal structure of methylammonium hexachloromolybdate(III) chloride and dimethylammonium hexachloromolybdate(III) chloride
    Leban, Ivan, 1947- ; Šegedin, Primož
    Crystal data: (I) methylammonium hexachloromolybdate(III) chloride, ▫$(CH_3NH_3)_4[MoCl_6]Cl, M_r=472.38$▫, orthorhombic, Pbam;a=12.596(3), b=9.923(2), c=7.333(2) Å, ▫$V=916.6(7) Å^3$▫, T=293(2) K, ... ▫$D_x=1.711(1) g cm^{-3}, D_m=1.70(2) g cm^{-3}$▫, Z=2,F(000)-474, ▫$MoH\alpha$▫ radiation, ▫$\lambda=0.71069 Å, \mu=17.16 cm^{-1}$▫, final R=0.043 and ▫$R_w=0.048$▫ for 1325 observed reflections ▫$[I\g\sigma(I)]$▫. (II) dimethylammonium hexachloromolybdate(III) chloride. ▫$[(CH_3)_2NH_2]_4[MoCl_6]Cl, M_r=528.48$▫,orthorhombic, ▫$P2_12_12$▫; a=12.867(2), b=10.158(2), c=8.719(2) Å, ▫$V=1145.3(7) Å^3$▫, T=293(2)K, ▫$D_x=1.532(1)g cm^{-3}, D_m=1.53(2) g cm^{-3}$▫, Z=2,F(000)=538, ▫$MoK\alpha$▫ radiation, ▫$\lambda=0.71069 Å, \mi=13.81 cm^{-1}$▫, final R=0.019 and ▫$R_w=0.020$▫ for observed reflections ▫$[I\b3\sigma (I)]$▫. There exist alternate layers of [cation/▫$[MoCl_6]^{-3}]and [cation/Cl^-]$▫ parallel to the (a,b) plane in both structures interlinked by hydrogen bonds N-H...Cl. The space group of compound (II) is a subgroup of the space group of compound (I). The symmetry reduction ▫$(Pbam\toP1_12_12)$▫ results from the orientation of the ▫$Me_2NH_2]^+$▫ ions is compound(II).
    Vir: Zeitschrift für Kristallographie. - ISSN 0044-2968 (206, 1993, str. 69-75)
    Vrsta gradiva - članek, sestavni del
    Leto - 1993
    Jezik - angleški
    COBISS.SI-ID - 17918469

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