Hydrogen bonding in lead uranyl oxide mineral sayrite

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Marco E. Ciriotti
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Hydrogen bonding in lead uranyl oxide mineral sayrite

Messaggio da Marco E. Ciriotti » gio 19 set, 2019 11:48

Prossima pubblicazione.

Referenza:
▪ Plášil, J. (2019): Hydrogen bonding in lead uranyl oxide mineral sayrite. Zeitschrift für Kristallographie - Crystalline Materials, 234, (in press).

Abstract:
The hydrogen bonding in the structure of the lead uranyl-oxide mineral sayrite has been refined and described directly from XRD data for the first time. Sayrite is monoclinic, a = 10.6925(4), b = 6.9593(2), c = 13.6035(5) Å, β = 107.680(3), with V = 964.46(6) Å3, and Z = 2, space group P 21/n. The structure has been refined to an R = 2.34% based on 2252 unique [I > 3σI] reflections. Sayrite possesses a layered structure with the uranyl-hydroxo-oxide sheets of the topology characterized by the topology symbol P4(UD)8R5. Between adjacent sheets, there are Pb2+ cations and molecular H2O. All H2O groups in sayrite belong to non-transformer groups, which distribute bond-valence from equally from all the cationic parts of the structure to anions. The structural formula of sayrite is Pb2(H2[4]O)4[(UO2)5O6(OH)2].
Marco E. Ciriotti

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

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Marco E. Ciriotti
Messaggi: 26368
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
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Re: Hydrogen bonding in lead uranyl oxide mineral sayrite

Messaggio da Marco E. Ciriotti » sab 07 dic, 2019 11:30

Pubblicazione effettuata.

Referenza:
▪ Plášil, J. (2019): Hydrogen bonding in lead uranyl oxide mineral sayrite. Zeitschrift für Kristallographie - Crystalline Materials, 234, 733-738.
Marco E. Ciriotti

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

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