Rationalization of the crystal structure of eudidymite in the light of the Extended Zintl-Klemm Concept

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Marco E. Ciriotti
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Rationalization of the crystal structure of eudidymite in the light of the Extended Zintl-Klemm Concept

Messaggio da Marco E. Ciriotti » sab 30 nov, 2019 16:42

Prossima pubblicazione.

Referenza:
▪ Vegas, A. & Jenkins, H.D.B. (2019): Rationalization of the crystal structure of Eudidymite Na2Be2[Si[4]6O15]·H2O in the light of the Extended Zintl-Klemm Concept. Its similarity with the structure of (NH4)2Ge[6][Ge[4]6O15]. Acta Crystallographica, B75, (in press).

Synopsis:
The structure of the mineral eudidymite (Na2Be2[Si[4]6O15]·H2O) is re-interpreted on the basis of the Extended Zintl-Klemm Concept. The donor atoms (Na, Be) convert the Si atoms into pseudo-P which form a three-connected Si-skeleton, characteristic of pentels (Group 15 elements). These skeletons are connected by fragments of the β-BeO structure. The [Si[4]6O15] substructure is identical to the [Ge[4]6O15] groups (Ge[4] atoms error Ψ-As) in (NH4)2Ge[6][Ge[4]6O15], in spite of their quite different compositions.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

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Marco E. Ciriotti
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Re: Rationalization of the crystal structure of eudidymite in the light of the Extended Zintl-Klemm Concept

Messaggio da Marco E. Ciriotti » sab 30 nov, 2019 20:36

Marco E. Ciriotti

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