Detail of "16924-00-8"

CAS Number:
16924-00-8
Name:
Tantalate(2-),heptafluoro-, potassium (1:2)
Molecular Structure:
Formula:
F₇K₂Ta
Molecular Weight:
392.15
Synonyms:
Potassiumfluotantalate(V) (F₇K₂Ta) (6CI);Potassium heptafluorotantalate(V) (7CI);Tantalate(2-), heptafluoro-, dipotassium (8CI,9CI);Dipotassiumheptafluorotantalate;NSC 154396;Potassium fluorotantalate;Potassiumfluorotantalate (F₇K₂Ta);Potassium heptafluorotantalate;Potassium tantalumfluoride (F₇K₂Ta);potassium heptafluorotantalate;
EINECS:
240-986-1
Density:
4.56 g/mL at 25 °C(lit.)
Hazard Symbols:
T; Xi
Risk Codes:
23/25
Safety:
45 Details

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POTASSIUM HEPTAFLUOROTANTALATE(V)

Supplier:TRUST&WE CO.,Ltd. [ China (Mainland)]

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Ultrastructure and textile chemistry: Ultrastructure and textile chemistry. Kaplin, I. J.; Knott, J. (Dtsch. Wollforschungsinst., Tech. Hochsch. Aachen, Aachen, Fed. Rep. Ger.). J. Text. Inst., 74(5), 303-5 (English) 1983. CODEN: JTINA7. ISSN: 0040-5000. DOCUMENT TYPE: Journal CA Section: 40 (Textiles) Electron microscopy of wool treated with K2TaF7 [16924-00-8] revealed that the highest concns. of cationic groups were present within the endocuticle, the nuclear remnants in the paracortex, and the intermacrofibrillar material in the orthocortex. The d-band of the cell membrane complex was also heavily stained, indicating fairly high levels of cationic groups in this component. Penetration of TaF7-2 into the regions was facilitated by the low degree of crosslinking. When the wool was treated with bis(aminopropyl)amine [56-18-8] before K2TaF7 treatment, the inverse staining result was obtained. Amino acid anal. of the amine-treated fibers were used in discussing possible mechanisms.

Structure and luminescence of dipotassium hepatafluorotantalate and dipotassium heptafluoroniobate: Structure and luminescence of dipotassium hepatafluorotantalate and dipotassium heptafluoroniobate. Torardi, C. C.; Brixner, L. H.; Blasse, G. (Cent. Res. Dev. Dep., E. I. du Pont de Nemours and Co., Wilmington, DE 19898, USA). J. Solid State Chem., 67(1), 21-5 (English) 1987. CODEN: JSSCBI. ISSN: 0022-4596. DOCUMENT TYPE: Journal CA Section: 75 (Crystallography and Liquid Crystals) Section cross-reference(s): 73 The crystal structure of K2TaF7 was refined using single-crystal x-ray diffraction data. The compd. is monoclinic, space group P21/c, a 5.8559(6), b 12.708(1), c 8.5125(9) ?, and b 90.17°, d.(calcd.) = 4. 16924-03-1 and 16924-00-8 are also in the experiment.11 for Z = 4. Final R = 0.020 (Rw = 0.022). At. coordinates are given. The structure is composed of TaF7 units that are interconnected by K ions. TaF7 polyhedra may be described as monocapped trigonal prisms with the capping atom located on one of the rectangular faces. K atoms are 9-coordinated and may be viewed as distorted monocapped square prisms. The previously unreported luminescence properties of K2TaF7 and K2NbF7 are reported. In addn. to the intrinsic emission, impurity luminescence due to OH- and Eu2+ were obsd. .