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New Crystal Data for Seven Molybdates MIIUMo4O16 (MII = Mg,Mn,Cd,Ca,Hg,Sr,Pb)

Published online by Cambridge University Press:  10 January 2013

M.R. Lee ,
M. Quartern  and
S. Jaulmes
M.R. Lee
Affiliation:
Laboratoire de Cristallochemie du Solide, Tour 54, Universitié Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France.
M. Quartern
Affiliation:
Laboratoire de Cristallochemie du Solide, Tour 54, Universitié Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France.
S. Jaulmes
Affiliation:
Laboratoire de Physique, CNRS-UA 200, Faculté des Sciences Pharmaceutiques et Biologiques, 4 Avenue de l'Observatoire, 75270 Paris Cedex 06, France.
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Abstract

Seven isotopic molybdates MIIUMo4O16 have been synthesized by solid state reaction with MII = Mg, Mn, Cd, Ca, Hg, Sr, Pb. Single crystals of CaUMo4O16 were obtained. Previously reported as triclinic, this compound is monoclinic, space group P2/n. Unit-cell parameters for the seven compounds are:

MgUMo4O16: a = 11.393(2), b = 6.505(1), c = 7.918(2) Å, β = 89.81(3)°, V = 586.8(5) Å3, Z = 2, Dx = 5.12 Mg m−3;

MnUMo4O16: a = 11.413(2), b = 6.555(1), c = 8.023(1) Å, β = 89.86(2)°, V = 600.2(4)Å3, Z = 2, Dx = 5.18 Mg m−3;

CdUMo4O16: a = 11.427(2), b = 6.607(1), c = 8.144(2) Å3, β = 90.40(2)°, V = 614.8(5)Å3, Z = 2, Dx = 5.37 Mg m−3;

CaUMo4O16: a = 11.443(3), b = 6.653(2), c = 8.239(2)Å, β = 90.51(3)°, V = 627.2(6)Å3, Z = 2, Dm = 4.83(5), Dx = 4.88 Mg m−3;

HgUMo4O16: a = 11.439(3), b = 6.643(1), c = 8.257(2)Å, β = 90.53(3)°, V = 627.4(6)Å3, Z = 2, Dx = 5.73 Mg m−3;

SrUMo4O16: 11.465(3), b = 6.768(2), c = 8.492(2) Å, β = 90.86(3)°, V = 658.8(6)Å3, Z = 2, Dx = 4.88 Mg m−3;

PbUMo4O16: a = 11.470(4), b = 6.813(2), c = 8.557(2)Å, β = 90.88(4)°, V = 668.7(8)Å3, Dx = 5.41 Mg m−3;

Powder diffraction data for each phase are reported.

Type
Research Article
Information
Powder Diffraction , Volume 3 , Issue 2 , June 1988 , pp. 106 - 109
Copyright
Copyright © Cambridge University Press 1988

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References

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