Structural complexity of natural uranyl sulfates

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Marco E. Ciriotti
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Iscritto il: ven 25 giu, 2004 11:31
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Structural complexity of natural uranyl sulfates

Messaggio da Marco E. Ciriotti » gio 15 nov, 2018 11:23

Prossima pubblicazione.

Referenza:
▪ Gurzhyi, V.V. & Plášil, J. (2019): Structural complexity of natural uranyl sulfates Structural complexity of natural uranyl sulfates. Acta Crystallographica, B75, (in press).

Abstract:
Complexity of the crystal structure, which can be measured as the amount of Shannon information per atom or per unit cell, is the result of various factors contribution, such as topological complexity, superstructure, hydration state, etc. The idealized (topological) symmetry of the structural units of the large and highly diverse group of uranyl sulfate minerals was determined and the concept of ladder diagrams was applied in order to quantify the particular contributions to the complexity values of the whole structures.
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: 25117
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
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Re: Structural complexity of natural uranyl sulfates

Messaggio da Marco E. Ciriotti » sab 17 nov, 2018 15:25

SE&O gli uranilsolfati sono 45:
A Adolfpateraite
A Alwilkinsite-(Y)
A Ammoniomathesiusite
A Ammoniozippeite
A Běhounekite
A Belakovskiite
A Beshtauite
A Bluelizardite
A Bobcookite
Rn Cobaltzippeite
A Deliensite
A Fermiite
A Feynmanite
A Geschieberite
A Greenlizardite
A Jáchymovite
G Johannite
A Klaprothite
A Leydetite
A Magnesioleydetite
Rd Magnesiozippeite
A Marécottite
A Mathesiusite
A Meisserite
A Meitnerite
Rn Metauranopilite
Rn Natrozippeite
Rn Nickelzippeite
A Oppenheimerite
A Ottohahnite
A Péligotite
A Plášilite
A Plavnoite
A Pseudojohannite
A Rabejacite
A Redcanyonite
A Rietveldite
A Sejkoraite-(Y)
A Shumwayite
A Straßmannite
A Svornostite
G Uranopilite
A Wetherillite
Rn Zinczippeite
Rd Zippeite

cui può aggiungersi questo uranilvanadosolfato:
A Falgarite
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: 25117
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
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Re: Structural complexity of natural uranyl sulfates

Messaggio da Marco E. Ciriotti » mar 22 gen, 2019 16:48

Referenza:
▪ Gurzhyi, V.V. & Plášil, J. (2019): Structural complexity of natural uranyl sulfates Structural complexity of natural uranyl sulfates. Acta Crystallographica, B75, (in press).

Abstract:
Uranyl sulfates, including those occurring in Nature (∼40 known members), possess particularly interesting structures. They exhibit a great dimensional and topological diversity of structures: from those based upon clusters of polyhedra to layered structures. There is also a great variability in the type of linkages between U and S polyhedra. From the point of view of complexity of those structures (measured as the amount of Shannon information per unit cell), most of the natural uranyl sulfates are intermediate (300–500 bits per cell) to complex (500–1000 bits per cell) with some exceptions, which can be considered as very complex structures (>1000 bits per cell). These exceptions are minerals alwilkinsite‐(Y) (1685.95 bits per cell), sejkoraite‐(Y) (1859.72 bits per cell), and natrozippeite (2528.63 bits per cell). The complexity of these structures is due to an extensive hydrogen bonding network which is crucial for the stability of these mineral structures. The hydrogen bonds help to propagate the charge from the highly charged interlayer cations (such as Y3+) or to link a high number of interlayer sites (i.e. five independent Na sites in the monoclinic natrozippeite) occupied by monovalent cations (Na+). The concept of informational ladder diagrams was applied to the structures of uranyl sulfates in order to quantify the particular contributions to the overall informational complexity and identifying the most contributing sources (topology, real symmetry, interlayer bonding).
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: 25117
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Re: Structural complexity of natural uranyl sulfates

Messaggio da Marco E. Ciriotti » mar 05 feb, 2019 15:20

Pubblicazione effettuata.

Referenza:
▪ Gurzhyi, V.V. & Plášil, J. (2019): Structural complexity of natural uranyl sulfates Structural complexity of natural uranyl sulfates. Acta Crystallographica, B75, 39-48.
Marco E. Ciriotti

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