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Acta Crystallographica Section B

Identifiers

ISSN 0108-7681
e-ISSN 1600-5740
DOI 10.1111/(ISSN)1600-5740

Publisher

International Union of Crystallography

Additional information

Data set: Wiley

Articles

article

On the structural relations of malachite. II. The brochantite MDO polytypes

Frank Girgsdies, Malte Behrens

Acta Crystallographica Section B > 68 > 6 > 571 - 577

The structural relation between malachite and the brochantite MDO (maximum degree of order) polytypes is discussed. It is demonstrated that the same building blocks which form the basis of brochantite polytypism also occur in malachite. The different arrangements of these building blocks in the two mineral structures are rationalized as a result of the different coordination geometries required by...
article

Dinuclear oxofluorometallates as a new structural type of d0 transition metal oxofluoride compound

Anatoly A. Udovenko, Natalia M. Laptash

Acta Crystallographica Section B > 68 > 6 > 602 - 609

Five isomorphous d0 transition metal oxofluoride compounds A3[M2OxF11 − x]·(AF)0.333 (A = K, Rb, NH4; M = Nb, Mo, W; x = 2, 4) have been synthesized from acid fluoride solutions, and their crystal structures have been determined by single‐crystal X‐ray diffraction. The basic structural building units are dinuclear M2X11 (dimers) formed from NbOF5 or Mo(W)O2F4 octahedra connected by the fluorine bridging...
article

Structures from MnX2 and proline: isomorphous racemic compounds and a series of chiral non‐isomorphous chain polymers

Kevin Lamberts, Ulli Englert

Acta Crystallographica Section B > 68 > 6 > 610 - 618

Reactions of manganese(II) chloride, bromide and iodide with proline as an enantiopure and racemic ligand result in six crystalline solids for which diffraction experiments have been performed at 100 K. For two of these compounds, crystal structures at ambient temperature had been reported previously. The most surprising outcome of our systematic comparison lies in the role of chirality: with enantiopure...
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