(IUCr) Acta Crystallographica Section B Volume 49, Part 3, June 1993

Modulated structures

The theory of modulated structures and the study of such materials constitute an active and healthy field in crystallography. To view visualizations of over 60 modulated stuctures published in Acta Crystallographica Section B, click on the structure below.

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issue contents

June 1993 issue

research papers

Lattice parameters, spontaneous strain and phase transitions in Pb₃(PO₄)₂

Determination of the incommensurately modulated structure of Ni_3±xTe₂

Determination of the incommensurately modulated structure of Cu_3−xTe₂

Neutron powder investigation of tetragonal and cubic stabilized zirconia, TZP and CSZ, at temperatures up to 1400 K

Structure determination from small crystals of two aluminophosphates CrAPO-14 and SAPO-43

A two-wavelength crystallographic study of a new aluminophosphate containing nickel

Structure of anhydrous titanyl sulfate, titanyl sulfate monohydrate and prediction of a new structure

Kikuchi patterns, index system and inflation properties of an Al₇₀Co₁₅Ni₁₅ decagonal quasicrystal

The modulated structure of LaMo₈O₁₄

Impurity and temperature-dependent structural transformations in polytypic crystals of CdI₂, PbI₂ and CdBr₂

Small-angle X-ray scattering study of precipitation in a Cu–2 at.% Co alloy

Thermal effects in the structure of ammonium perrhenate

Structure of RNi₃Al₉ (R = Y, Gd, Dy, Er) with either ordered or partly disordered arrangement of Al-atom triangles and rare-earth-metal atoms

Structure of Gd₃Ru₄Al₁₂, a new member of the EuMg_5.2 structure family with minority-atom clusters

Structure of a high-pressure polymorph of Mg₃BN₃ determined from X-ray powder data

Phase transition in Sr₈[Al₁₂O₂₄](MoO₄)₂ aluminate sodalite (SAM)

Ionic distribution in the solid-state laser material Na⁺/Nd³⁺ β''-alumina

Phase transitions of the halogen-bridged M^II–X–M^IV mixed-valence complexes [M(en)₂][MX₂(en)₂](ClO₄)₄ (M = Pt,Pd; X = Cl, Br). Structural studies of the high- and low-temperature phases of [Pt(en)₂][PtBr₂(en)₂](ClO₄)₄

Preparations and structural correlations for the complexes of M^III halides (M = As, Sb, Bi) with crown ethers: structures of AsCl₃.12-crown-4, AsCl₃.15-crown-5, SbCl₃.12-crown-4 and BiCl₃.15-crown-5 and an evaluation of relative binding strengths for crown ligands

Comparative structural studies of [(η⁵-Me₅C₅)Ir^I(2,2'-bipyridine–4,4'-COOH)] and [(η⁵-Me₅C₅)Ir^III{2,2'-bipyridine-4,4'-COO(CH₂)₃-pyrrole}Cl]ClO₄

Structure determination of a complex pentamolybdodisulfate from synchrotron radiation Laue diffraction photographs: derivation and application of a wavelength-dependent absorption correction

Experimental charge density and electrostatic potential in adenine hydrochloride hemihydrate at 123 K

Salt-bridge formation by Cinchona alkaloids: quininium salicylate monohydrate

Crystal engineering and structural investigations of the 2-amino-5-nitropyridinium salts C₅H₆N₃O₂⁺.HSO₄⁻ and C₅H₆N₃O₂⁺.H₂AsO₄⁻

Crystal structures and polymorphism in aliphatic p-amidobenzoic acids

Structures of nine histamine H₂ antagonists related to N-cyano-N'-methyl-N''-[4-(2-pyridyl)butyl]guanidine

Peptide with built-in conformational constraints: structure of Z-(Aib)₇-O^tBu

Resonance-assisted hydrogen bonding. III. Formation of intermolecular hydrogen-bonded chains in crystals of β-diketone enols and its relevance to molecular association

book reviews

Organic crystal chemistry. (IUCr Crystallographic Symposia No. 4) edited by J. B. Garbarcyzyk and D. W. Jones

Crystallography in modern chemistry. A resource book of crystal structures by T. C. W. Mak and G.-D. Zhou

international union of crystallography

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