Further developments for Acta Crystallographica Section C

Editorial for 2003.

Notes for authors 2003

Hexa­aqua­nickel(II) bis­(hypophosphite)

In the title compound, the Ni^II cations have a pseudo-face-centered cubic cell, with cell parameter a 10.216 Å and tetrahedral cavities occupied by P atoms. The Ni^II cation has an octahedral coordination sphere consisting of six water O atoms. The planes of oppositely coordinated water mol­ecules are in a cross conformation. The geometry of the hypophosphite anion is close to point symmetry mm2. The hypophosphite anions are hydrogen bonded to the coordinated water molecules.

Lithium niobium di­sulfide, Li_0.63NbS₂

Single crystals of lithium niobium di­sulfide, prepared by separated reactant metathesis, yielded a refined Li content of y = 0.63 (6). The Li content has been further confirmed analytically both by flame photometry and by preliminary neutron powder diffraction data.

Uranyl dinitrate trihydrate, UO₂(NO₃)₂(H₂O)₃

The structure of UO₂(NO₃)₂(H₂O)₃ consists of two distinct centrosymmetric isolated hexagonal uranyl bipyramids, which share edges with two nitrate groups. Water is structurally located in the interstices between these isolated uranyl dinitrate clusters and at the equatorial edges of the [UO₂(NO₃)₂] groups.

Tetra­aquabis(carbamoyldi­cyanomethanido-κN)manganese(II) dihydrate

Bis(7-amino-1,3-benzo­thiazole-κN³)di­chlorozinc(II)

Two polymorphs of bis­(1,10-phenanthroline-κ²N,N′)copper(I) iodide

Di­chloro[1,1′-(5,9-di­thia-2,12-diazoniatrideca-1,12-diene-1,13-diyl)dinaphthalen-2-olato-κ²O,O′]di­methyltin(IV) aceto­nitrile solvate

Ethyl and iso­propyl 4-ferrocenylbenzoate

[7,13-Bis(2-amino­benzyl)-1,4,10-trioxa-7,13-di­aza­cyclo­penta­decane]diiso­thio­cyanatobarium(II)

Di­chlorobis(DL-proline-κO)zinc(II)

Bis[μ-6-amino-3-methyl-5-nitroso­pyrimidine-2,4(1H,3H)-dionato-κ³O⁴,N⁵:O⁵]-di-μ-aqua-bis­{di­aqua[6-amino-3-methyl-5-nitroso­pyrimidine-2,4(1H,3H)-dionato-κ²N¹,O²]strontium(II)}: centrosymmetric dimers containing nine-coordinate Sr, linked by multiple hydrogen bonds into a three-dimensional framework

Di­chloro(4,4′-dinonyl-2,2′-bi­pyridine-κ²N,N′)platinum(II)

N-Ethylpyridinium bis­(2-thioxo-1,3-di­thiole-4,5-di­thiolato)nickelate

A new polymeric phase of zinc(II) oxydi­acetate

A triclinic polymorph of benzanilide: disordered molecules form hydrogen-bonded chains

Two polymorphs, with Z′ = 1 and 2, of 2-amino-4-chloro-6-morpholino­pyrimidine in P2₁/c, and 2-amino-4-chloro-6-piperidino­pyrimidine, which is isomorphous and almost isostructural with the Z′ = 2 polymorph

Hydrogen bonding in 2-amino-4-meth­oxy-6-methyl­pyrimidine, 2-benzyl­amino-4-benzyl­oxy-6-methyl­pyrimidine and 4-benzyl­amino-2,6-bis­(benzyl­oxy)­pyrimidine: π-stacked chains of fused R₂²(8) rings, and centrosymmetric R₂²(8) dimers

Hydrogen bonding in nitroaniline analogues: hydrogen-bonded sheets in 2-amino-4,6-di­meth­oxy-5-nitro­pyrimidine and π-stacked hydrogen-bonded sheets in 4-amino-2,6-di­meth­oxy-5-nitro­pyrimidine

Hydrogen bonding in nitroaniline analogues: a hydrogen-bonded chain of rings in 2-amino-4-butylamino-6-meth­oxy-5-nitro­pyrimidine

Zwitterionic 5-(1-piperidinio­methyl)-1H-tetrazolide

N-Chloro­acetyl-β-alanine

N⁶-Furfuryladenine (kinetin) hydrochloride

Ethyl 3-amino-6-phenyl-4-tolylthieno[2,3-b]pyridine-2-carboxylate

(R)-(6,6′-Di­hydroxybi­phenyl-2,2′-diyl)bis­(di­phenylphosphine oxide) methanol solvate

4,5,9,10-Tetra­hydro-4-methyl-2-phenyl-9,10-ep­oxy-3H,10aH-cyclobuta[a]benzo[2,3,4-de]iso­quinoline-3,5-dione

2-Amino-4-(4-chloro­phenyl)-7,7-di­methyl-5-oxo-5,6,7,8-tetra­hydro-4H-chromene-3-carbo­nitrile

8-(2-Bromo-3-meth­oxy-3-methylbutyl)-7-methoxycoumarin

Intermolecular stacking in pyrazolo[3,4-d]pyrimidine-based penta­methylene-linked flexible molecules

Two derivatives of (N-phenylthioureido­alkyl)phosphonates

2-Aminopyridinium benzoate

Three 2-amino­purine derivatives