ISSN:
1434-4475
Keywords:
Alkaliselenocuprates
;
Alkalithiocuprates
;
Crystal structure
;
Thalliumselenocuprate
;
Thalliumthiocuprate
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract TlCu4S3, TlCu4Se3, KCu4Se3, RbCu4Se3, CsCu4S3 and CsCu4Se3 were prepared by direct synthesis or by the carbonate melt method. They are isotypic with KCu4S3, space group P4/mmm,Z=1. The lattice parameters are: TlCu4S3:a=3.894(1)Å,c=9.33(1)Å, TlCu4Se3:a=3.974(4)Å,c=9.84(2)Å, KCu4Se3:a=3.963(4)Å,c=9.81(3)Å, RbCu4Se3:a=4.048(2)Å,c=9.86(1)Å, CsCu4S3:a=3.964(3)Å,c=9.67(1)Å,and CsCu4Se3:a=4.091(2)Å,c=10.08(1)Å. The crystal structure of TlCu4S3 was refined from single crystal diffractometer data. Isotypy of the other compounds was checked by visual inspection of rotating crystal orDebye Scherrer film intensities. The relationship between the crystal structures of the MCu4 X 3-phases, the TlT2 X 2-phases (ThCr2Si2 type) and the anti-CaF2 type is shown.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00903326
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