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Thermodynamic properties of copper silicate: dioptase: Cu6Si6O18·6H2O

✍ Scribed by Irina A. Kiseleva; Lyubov P. Ogorodova; Lyubov V. Melchakova; Mira R. Bisengalieva


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
293 KB
Volume
25
Category
Article
ISSN
0021-9614

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Vibrational analysis of dioptase Cu6Si6O
✍ David A. McKeown; Charles C. Kim; Michael I. Bell 📂 Article 📅 1995 🏛 Springer-Verlag 🌐 English ⚖ 778 KB

The normal modes of vibration and their frequencies are calculated for dioptase, a mineral whose crystal structure (space group R3 or C~i ) consists of puckered six-membered silicate rings (Si6Ols) linked by Cu 2 § ions and HaO groups. The calculation employs a valence force potential consisting of

From Molecular to Two-Dimensional Anders
✍ Feng-Xian Liu; Catherine Marchal-Roch; Damien Dambournet; Aloïs Acker; Jérome Ma 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 739 KB

## Abstract Two 2D Anderson polyoxomolybdate‐based compounds, [{Ni(H~2~O)~4~}~2~{Ni(OH)~6~Mo~6~O~18~}]·4H~2~O (1) and [Ni(H~2~O)~6~][Ag~2~{Ni(OH)~6~Mo~6~O~18~}]·8H~2~O (2), were synthesized and characterized by elemental analysis, IR spectroscopy, SEM, and single‐crystal XRD. Their thermal behavior