forthcoming articles

The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section E: Crystallographic Communications.

See also Forthcoming articles in all IUCr journals.

Accepted 15 July 2024

Crystal structure of bis­[(η5-tert-butyl­cyclo­pentadien­yl)tri­carbonyl­molybdenum(I)](MoMo)

The Mo—Mo bond in the dinuclear mol­ecular title compound is 3.2323 (3) Å, in good agreement with related dinuclear molybdenum(I) compounds with cyclo­penta­dienyl (Cp) ligands.

Accepted 12 July 2024

Synthesis, mol­ecular and crystal structure of [(NH2)2CSSC(NH2)2]2[RuBr6]Br2·3H2O

The [RuBr6]2− anionic complex has an octa­hedral structure. The Ru—Br distances fall in the range 2.4779 (4)–2.4890 (4) Å. The S—S and C—S distances are 2.0282 (12) and 1.783 (2) Å, respectively. The H2O mol­ecules, Br ions, and NH2 groups of the cation are linked by hydrogen bonds.

Accepted 11 July 2024

Synthesis, mol­ecular and crystal structures of 4-amino-3,5-di­fluoro­benzo­nitrile, ethyl 4-amino-3,5-di­fluoro­benzoate, and di­ethyl 4,4′-(diazene-1,2-di­yl)bis­(3,5-di­fluoro­benzoate)

Two inter­mediates, 4-amino-3,5-di­fluoro­benzo­nitrile, C7H4F2N2 (I), and ethyl 4-amino-3,5-di­fluoro­benzoate, C9H9F2NO2 (II), along with a visible-light-responsive azo­benzene derivative, diethyl 4,4′-(diazene-1,2-di­yl)bis­(3,5-di­fluoro­benzoate), C18H14F4N2O4 (III), obtained by four-step synthetic procedure, were studied using single-crystal X-ray diffraction. In the crystals of I and II, the mol­ecules are connected by N—H⋯N, N—H⋯F and N—H⋯O hydrogen bonds, C—H⋯F short contacts, and π-stacking inter­actions. In the crystal of III, only stacking inter­actions between the mol­ecules are found.

Accepted 2 July 2024

Crystal structure of 4-bromo-5,7-dimeth­oxy-2,3-di­hydro-1H-inden-1-one

In the title mol­ecule, C11H11BrO3, the di­hydro­indene moiety is essentially planar but with a slight twist in the saturated portion of the five-membered ring. The meth­oxy groups lie close to the above plane. In the crystal, π-stacking inter­actions between six-membered rings form stacks of mol­ecules extending along the a-axis directions, which are linked by weak C—H⋯O and C—H⋯Br hydrogen bonds.

Accepted 28 May 2024

Crystal structure of Staudtienic acid, a diterpenoid from Staudtia kamerunensis Warb. (Myristicaceae)

This work presents the crystal structure of a natural diterpenoid, Staudtienic acid, isolated from the stem bark of Staudtia kamerunensis Warb (Myristicaceae). This work confirmed the results previously obtained from NOE spectroscopy.

Accepted 6 May 2024

Structural multiplicity in a multi-component solvated crystal of the anti­retroviral protease inhibitor Lopinavir

The multi-component solvated Lopinavir crystal was prepared using evaporative methods. The crystal structure is unusual in that although Lopinavir was crystallized in ethyl­ene glycol (ethane-1,2-diol) alone, the unit cell contains four different components, totalling 18 mol­ecules. The stoichiometric ratio of this crystal is eight lopinavir mol­ecules, two ethane-1,2-diol mol­ecules, one (E)-ethene-1,2-diol (C2H4O2) and seven water mol­ecules.


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