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Powder-diffraction solutions of the crystal structure of [Pd(NH4)3]C2O4

Published online by Cambridge University Press:  10 January 2013

L. A. Solovyov ,
M. L. Blochina ,
S. D. Kirik ,
A. I. Blochin  and
M. G. Derikova
L. A. Solovyov
Affiliation:
Institute of Chemistry and Chemical Technology, Russian Academy of Sciences, 660049 Krasnoyarsk, Russia
M. L. Blochina
Affiliation:
Institute of Chemistry and Chemical Technology, Russian Academy of Sciences, 660049 Krasnoyarsk, Russia
S. D. Kirik*
Affiliation:
Institute of Chemistry and Chemical Technology, Russian Academy of Sciences, 660049 Krasnoyarsk, Russia
A. I. Blochin
Affiliation:
Academy of Nonferrous Metals and Gold, 660025 Krasnoyarsk, Russia
M. G. Derikova
Affiliation:
Academy of Nonferrous Metals and Gold, 660025 Krasnoyarsk, Russia
*
a) Author to whom correspondence should be addressed.
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Abstract

The crystal structure of [Pd(NH3)4]C2O4 was determined from X-ray powder data. The crystals are triclinic with unit-cell parameters: a=7.0807(7) Å, b=7.0806(7) Å, c=3.8011(5) Å, α=91.910(1)°, β=98.665(1)°, γ=97.283(1)°, S.G.=P−1, Z=1, V=187.11 Å3. All non-hydrogen atoms were located from the Patterson map. The structure was refined by the Rietveld technique: Rp−b=6.88, Rwp=6.51, RB=2.66. The crystal structure of [Pd(NH3)4]C2O4 is built from two types of elements: [Pd(NH3)4]2+ and C2O2−4. Cations [Pd(NH3)4]2+ form columns along c with distances (Pd–Pd)=3.8011 Å. C2O2−4 anions occupy places in the middle of the unit cell between layers of [Pd(NH3)4]2+. The compound is stable up to 200 °C and then decomposes, giving Pd powder.

Type
Research Article
Information
Powder Diffraction , Volume 11 , Issue 1 , March 1996 , pp. 13 - 16
Copyright
Copyright © Cambridge University Press 1996

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