Kristallstruktur von AuCd3 |
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| Affiliation: | 1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, Shandong 266100, PR China;2. Max Planck Institute for Terrestrial Microbiology LOEWE Center for Synthetic Microbiology (SYNMIKRO), Marburg 35043, Germany;1. School of Ethnic Medicine, Guizhou Minzu University, Guiyang 550025, China;2. College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China;3. Department of Biotechnology, Guizhou Medical University, Guiyang 550025, China;4. Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, United States;5. Chinese Medicine Research and Development Center, China Medical University and Hospital, Taichung 401, Taiwan;1. Department of Pharmaceutical Chemistry, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;2. Laboratory of Pharmacology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;3. Department of Inorganic Chemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;1. Institute of Functional Materials, Sichuan University of Science&Engineering, Zigong 643000, PR China;2. Dongguan Key Laboratory of Drug Design and Formulation Technology, Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University, School of Pharmacy, Guangdong Medical University, Dongguan 523808, PR China |
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| Abstract: | No structural transformation was found in AuCd3, but instead a new phase AuCd√5 with a transformation temperature of about 270 °C. AuCd3 crystallizes in a hexagonal structure similar to the Cu3P.r-type. The structure may be described as a vacancy and displacement variant of the CsCl structure of beta brass. One vacancy of the cell is fixed by the displacements of the surrounding atoms. The other vacancies are fairly free and appear to be responsible for the maximum in damping capacity at 400 °C. The outer core electrons may be assumed in a correlation which is also found in many representatives of the NiAs-type, while the valence electrons must be in a hexagonal primitive correlation which is highly commensurable to the core electron correlation. |
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