Ca7Au3 and Ca5Au4, two structures closely related to the Th7Fe3 and Pu5Rh4 types |
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| Authors: | ML Fornasini F Merlo |
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| Institution: | Instituto di Chimica Fisica, Universita`di Genova, Corso Europa, Palazzo delle Scienze, 16132 Genoa, Italy |
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| Abstract: | Two new intermetallic compounds have been synthetized and structurally studied by single crystal diffractometric data: Ca7Au3 (oP80, space groupPbca,a = 20.742(8), b = 18.036(8), c = 6.665(2) A?,Z = 8, R = 0.051) and Ca5Au4 (mP18, space groupP21/c, a = 8.028(3), b = 8.019(6), c = 7.727(3) A?, β = 109.16(6)°,Z = 2, R = 0.104). Both atomic arrangements, which represent new structural types, are based on Au-centered Ca trigonal prisms and are geometrically related to the Th7Fe3 and Pu5Rh4 structures. |
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| Keywords: | To whom all correspondence should be addressed |
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