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Gold(III) selenide, with the chemical formula Au2Se3, is a compound consisting of gold and selenium. It is a black, crystalline solid that is insoluble in water and has a melting point of approximately 300°C. Gold(III) selenide is a semiconductor material with potential applications in the fields of electronics and optoelectronics, particularly in the development of solar cells and photodetectors. The compound is also of interest in the study of gold-selenium interactions and their potential use in catalysis and other chemical processes. Due to its reactivity with air and moisture, gold(III) selenide is typically handled under controlled conditions to prevent decomposition.

1303-62-4

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1303-62-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1303-62-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,0 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1303-62:
(6*1)+(5*3)+(4*0)+(3*3)+(2*6)+(1*2)=44
44 % 10 = 4
So 1303-62-4 is a valid CAS Registry Number.

1303-62-4Downstream Products

1303-62-4Relevant academic research and scientific papers

Valence of Au in AuTe2 and AuSe studied by x-ray absorption spectroscopy

Ettema, A. R. H. F.,Stegink, T. A.,Haas, C.

, p. 211 - 214 (1994)

The gold compounds AuTe2 and AuSe contain Au atoms in two different chemical surroundings. In the literature these different coordinations have been associated with a difference in valency of the Au atoms. In this paper the occupation of the 5d shell in AuSe and AuTe2 is deduced from a study of the 4f → 5d X-ray absorption edge. A comparison is made with the absorption edges of Au, AuCl and AuCl3. The results show that only AuCl3 has Au atoms in a valence state of III, and that the Au atoms in AuTe2 and AuSe are all in the same monovalent state I, independent of their chemical environment.

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