Further developments for Acta Crystallographica Section C

Editorial for 2004.

Notes for authors 2004

Lead bis­muth calcium sodium phosphate: Pb_4.6Bi_0.4Ca_2.6Na_2.4(PO₄)₆

The title compound belongs to the apatite family and crystallizes with anionic vacancies in tunnels.

(NH₄)₄Cd(HSe^IVO₃)₂(Se^VIO₄)₂: a new structure type with kröhnkite-like chains

(NH₄)₄Cd(HSe^IVO₃)₂(Se^VIO₄)₂ contains kröhnkite-like chains in which CdO₆ octahedra are linked via bridging HSeO₃ groups. SeO₄ groups, which decorate the chains, are attached to the CdO₆ octahedra in a trans arrangement.

Uranium cobalt tetraaluminide, UCoAl₄

The hexagonal crystal structure of UCoAl₄ consists of a succession of atomic layers of composition UCoAl and Al₃ alternating along the short c axis.

Dipotassium aqua­penta­fluoro­vanadate

The title compound is isostructural with K₂[FeF₅(H₂O)] and contains polymeric anion chains held together by strong O—H⋯F bonds. Each V atom is coordinated to five terminal F atoms and the O atom of one water mol­ecule. Pairs of O—H⋯F bonds are formed by two cis-related F atoms. Twofold axes run along the O—V—F axis of the V-centred octahedra.

Di-μ-hydroxo-bis­({bis­[2-(2-pyridyl)ethyl]amine-κ³N}copper(II)) dichloride hexahydrate

trans-Di­chloro-cis-bis­(3,6-di­methyl­carbazolyl)-cis-bis­(tetra­hydro­furan)­zirconium(IV) benzene sesquisolvate

trans-Di­chloro(di­methyl sulfide-κS)(pyridine-κN)platinum(II)

Potassium carbamoyldi­cyano­methanide

Ag^I and Cu^I binuclear macrocyclic complexes with 1-(3-pyridyl)­ethanone oxime

catena-Poly­[bis­[aqua(2,2-bi­pyridine-κ²N,N′)­cobalt(II)]-μ-1,2,4,5-benzene­tetra­carboxyl­ato-κ⁴O¹:O²:O³:O⁴]

Cocrystal of the [Mn^IV(C₂H₇N₅)₃]⁴⁺ ion and biguanidium: a double hydrogen-bond interaction with guanidinium-recognizing anions

Chloro(L-glutamato-κ²N,O)(1,10-phenanthroline-κ²N,N′)copper(II) monohydrate

Bis­[amino­guanidinium(1+)] hexa­fluoro­zirconate(IV): redeterminations and normal probability analysis

Bis{bis­[5-tert-butyl-2-oxido-3-(1-pyridinio­methyl)­phenyl]­methane}­dioxouranium bis­(tri­fluoro­methane­sulfonate) pyridine disolvate: a uranyl bis­(diphenoxide) complex resulting from homooxacalixarene cleavage

mer-(4-Amino­benzene­sulfonato-κN)tri­aqua(1,10-phenanthroline-κ²N,N′)cobalt(II) chloride

Tetra­kis­(tetra­methyl­ammonium) dodeca-μ-chloro-hexa­chloro-octahedro-hexatantalate chloride

Bis­(saccharinato-κN)zinc(II) com­plexes with N,N′-bidentate 2-amino­methyl­pyridine and 2-amino­ethylpyridine

Four tri­fluoro­methyl­nitro­benzene analogues

(Z)-2-(1H-Indol-3-yl­methyl­ene)-1-azabi­cyclo­[2.2.2]­octan-3-one

Two isomers of 2,4-di­benzyl-8-azabi­cyclo­[3.2.1]­octan-3-ol

Three-dimensional aggregation in 2-hy­droxy-3-iodo-5-nitrobenzaldehyde involving C—H⋯O, iodo–nitro and aromatic π–π stacking interactions, and isolated dimers in disordered 2,4-di­iodo-6-nitroanisole

2-Amino-5-nitro­thia­zole mono­ethanol solvate: triply-interwoven hydrogen-bonded sheets containing centrosymmetric R(8) and R(38) rings

Hydrogen-bonded chains of rings in 3-iodo­benz­aldehyde 2,4-di­nitro­phenyl­hydrazone and 4-iodo­benz­aldehyde 2,4-di­nitro­phenyl­hydrazone, and a three-dimensional framework in 4-iodo­benz­aldehyde 4-nitro­phenyl­hydrazone generated by the combi­nation of N—H⋯O and C—H⋯O hydrogen bonds with iodo–nitro interactions

A three-dimensional hydrogen-bonded framework in N-(3-nitro­phenyl)­phthal­imide, and hydrogen-bonded chains of rings in N-(3,5-di­nitro­phenyl)­phthal­imide, linked into sheets by dipolar interactions

Three N²-benzoyl­oxybenz­amidines: sheet structures built from hard and soft hydrogen bonds and aromatic π–π stacking interactions

Hydrogen bonding in nitro­aniline analogues: 4-nitro­benz­aldehyde hydrazone forms hydrogen-bonded sheets of R(26) rings

Hydrogen bonding in C-substituted nitro­anilines: π-stacked sheets of R(20) and R(28) rings in 2-cyano-4-nitroaniline

(E,E)-1,4-Di­ethyl-1,4-di­phenyl-2,3-di­aza­buta­diene

2,4,6-Tri­methyl­benz­amide

Two hydrates of 6-meth­oxy­purine

Two dimorphs of 5-methyl­sulfanyl-1H-tetrazole

Inclusion compounds of 2,5-di­phenyl­hydro­quinone

Three-dimensional hydrogen-bonding supramolecular architecture of 2-(3-pyridinio)-5-(3-pyridyl)-1,3,4-oxa­diazole perchlorate

Hydrogen-bonding patterns in two structural isomers of 3,6-bis­(2-chloro­phenyl)-1,4-di­hydro-1,2,4,5-tetrazine

1,4-Diethynyl-2,5-di­meth­oxy­benzene at ca 150 K

N,N-Di­methyl­anilinium 3-cyano-4-(di­cyano­methyl­ene)-5-oxo-4,5-di­hydro-1H-pyrrol-2-olate

2-Chloro­phenyl 3-nitro­benzene­sulfonate and 2,4-di­chloro­phenyl 3-nitro­benzene­sulfonate: supramole­cular aggregation through C–H⋯O, π–π and van der Waals interactions

A new monoclinic polymorph of methyl p-amino­benzoate

17-Oxo-5α-androst-6-en-3β-yl acetate

Two androst-5-ene derivatives: 16-[4-(3-chloroprop­oxy)-3-meth­oxybenzyl­idene]-17-oxoandrost-5-en-3β-ol and 16-[3-meth­oxy-4-(2-pyrrolidin-1-yleth­oxy)benzyl­idene]-3β-pyrrolidinoandrost-5-en-17β-ol monohydrate

The polysulfonylamines bis­(methylsulfonamido) sulfone and bis­(tri­fluoro­methylsulfonamido) sulfone

3β,7α,12α-Tri­formyl­oxy-24-nor-5β-chol-22-ene

Hydrogen bonding in C-substituted nitro­anilines: a chain of R(12) rings in 2-methane­sulfonyl-4-nitro­aniline

Methyl 4-nitro­phenyl sulfoxide: π-stacked chains of hydrogen-bonded R(10) dimers

6a,6b,12a,12b-Tetra­hydro­cyclo­octa­[3,4]­cyclo­buta­[1,2][8]­annulene

Regioisomeric 4-nitroindazole N¹- and N²-(β-D-ribonucleosides)

1-Bromo-2,6-bis­[(pyrazol-1-yl)­methyl]­benzene

Intramolecular cyclization of 4,7-bis­(2-bromo­acetyl)-1-thia-4,7-di­aza­cyclo­nonane