forthcoming articles

The following articles are a selection of those recently accepted for publication in Acta Crystallographica Section C: Structural Chemistry.

See also Forthcoming articles in all IUCr journals.

Accepted 4 September 2019

Absolute structure of the chiral pyrrolidine derivative (2S)-methyl (Z)-5-(2-tert-but­oxy-1-cyano-2-oxo­ethyl­idene)pyrrolidine-2-carboxyl­ate, a com­pound with low resonant scattering

The light-atom com­pound (2S)-methyl (Z)-5-(2-tert-but­oxy-1-cyano-2-oxo­ethyl­idene)pyrrolidine-2-carboxyl­ate is an enanti­opure coordination partner for cations. Despite its only minor resonant scattering, the absolute structure was determined by a combination of diffraction, CD spectroscopy and theoretical calculations.

Accepted 31 August 2019

A concise and efficient synthesis of amino-substituted (1H-benzo[d]imidazol-1-yl)pyrimidine hybrids: synthetic sequence and the mol­ecular and supra­molecular structures of six examples

Syntheses are reported for a series of amino-substituted (1H-benzo[d]imidazol-1-yl)pyrimidines and structures are reported for six products of this type. Multiple hydrogen bonds generate supra­molecular structures in two or three dimensions.

Accepted 28 August 2019

Polymorphism and photoluminescence properties of K3ErSi2O7

The crystal structures of two tripotassium erbium disilicate, K3ErSi2O7, polymorphs synthesized by high-temperature flux crystal growth were determined by single-crystal X-ray diffraction analysis. Powder X-ray diffraction, photoluminescence spectroscopy and scanning electron microscopy equipped with an energy dispersive X-ray spectrometer elucidated differences between the two polymorphs.

Accepted 27 August 2019

Synthesis, crystal structure solution and characterization of two organic–inorganic hybrid layered materials based on metal sulfates and 1,4-phenyl­enedi­amine

The powder X-ray diffraction technique was used to determine the crystal structures of two new organic–inorganic hybrid materials forming three-dimensional networks composed of alternating organic and inorganic layers. Thermal stability tests of the materials indicated that one is stable up to 537 K and the other is stable up to 437 K.

Accepted 21 August 2019

Two precatalysts for application in propargylic CH activation

The complexes [Rh(NBD)(DPEPhos)]BF4 and [Rh(COD)(DPEPhos)]BF4·CH2Cl2 {DPEPhos is bis­[(2-di­phenyl­phosphan­yl)phen­yl] ether, NBD is norborna-2,5-diene and COD is cyclo­octa-1,5-diene} are applied as precatalysts. In addition, the catalytically inactive penta­coordinated 18-electron complex [RhCl(NBD(DPEPhos)] was synthesized, which forms in the presence of chloride in the reaction system.


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