JOURNAL ARTICLE

Structures and phase transitions of [(CH3)4As]2CoCl4 and [(CH3)4As]2ZnCl4

F. J. ZúñigaM. J. CabezudoG. MadariagaM. R. PressprichMarcus R. BondR.D. Willett

Year: 1991 Journal:   Acta Crystallographica Section B Structural Science Vol: 47 (3)Pages: 337-344   Publisher: Wiley

Abstract

Les composes, isostructuraux, possedent des structures quadratiques inhabituelles, constituees de couches d'anions MCl 4 2− empiles perpendiculairement a l'axe c et alternant avec des couches de cations (CH 3 ) 4 As + . La structure moyenne de cette phase possede le groupe d'espace I4 1 /a. A 293 K, [(CH 3 ) 4 As] 2 CoCl 4 cristallise dans P4 2 /mbc avec a=17,831, c=25,20 A, Z=16; affinement jusqua R=0,037 [(CH 3 ) 4 As] 2 ZnCl 4 cristallise dans P4 2 /mbc avec a=17,824, c=25,209 A, Z=16; affinement jusqu'a R=0,096

Keywords:
Crystallography Chemistry X-ray crystallography Crystal structure Inorganic compound Stereochemistry Physics Diffraction Optics

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0.74
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Topics

Solid-state spectroscopy and crystallography
Physical Sciences →  Materials Science →  Materials Chemistry
Crystallization and Solubility Studies
Physical Sciences →  Materials Science →  Materials Chemistry
Chemical Thermodynamics and Molecular Structure
Physical Sciences →  Chemistry →  Organic Chemistry

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