issue contents

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296

September 2021 issue

Highlighted illustration

Cover illustration: Six CuI com­plexes containing 2-di-tert-butyl­phosphanyl-2′,4′,6′-triiso­propyl­biphenyl (tBuXPhos) and an ancillary ligand were prepared and characterized. A weaker inter­action between the metal and ancillary ligand was observed to result in a stronger copper–arene inter­action. See Woodhouse, Buchanan, Dais, Ainscough, Brodie, Freeman & Plieger [Acta Cryst. (2021), C77, 513–521].

research papers


link to html
New spiro­[indoline-3,3′-indolizine]s have been synthesized with high regio- and stereo­specificity from simple starting materials in a one-step process. Different combinations of hydrogen bonds link the mol­ecules to form either sheets or chains of rings.

link to html
Nine known com­pounds have been isolated from Combretum glutinosum leaves, including flavonoids and triterpenes. The crystal structures of umuhengerin and (20S,24R)-ocotillone are reported for the first time; the latter structure confirms the absolute configuration. The crude extracts and the isolated com­pounds were tested for their anthelmintic activity on the larvae and adult worms of Haemonchus contortus. The best activity on both stages of the parasite was obtained with the flavonoids.

link to html
Six CuI com­plexes containing 2-di-tert-butyl­phosphanyl-2′,4′,6′-triiso­propyl­biphenyl (tBuXPhos) and an ancillary ligand were prepared and characterized. A weaker inter­action between the metal and ancillary ligand was observed to result in a stronger copper–arene inter­action.

link to html
The synthesis and structural characterization of new potassium tri­phenyl­sil­oxides manifesting a polyoxometalate-like structure are reported.

link to html
The synthesis and crystal structures of three new chiral pyridine-containing derivatives as chiral ligands in metal-catalysed asymmetric reactions are reported. The possibility and mechanism of metal com­plex formation based on structural, conformational and energetic data is discussed.

link to html
5α,14α-Androstane crystallizes in two different crystallographic forms, which have been calculated to be isoergic in terms of their free energy. The presence of the ketone impurity 5α,14α-androstan-17-one was detected in Form II crystals grown from diethyl ether, while the absolute stereochemistry has been determined in pure Form II crystals.

link to html
Tris(thio­ether) ligand-supported FeII–alkoxide/aryl­oxides were obtained in either monomeric or dimeric form, depending on the identity of the alkoxide/aryl­oxide ligand.

link to html
A series of luminescent cocrystals with fluor­an­thene as fluoro­phore and 1,2,4,5-tetra­cyano­benzene (TCNB), tetra­fluoro­terephthalo­nitrile (TFP) and octa­fluoro­naphthalene (OFN) as coformer was designed and synthesized. Structure analysis revealed that the layered structures were due to charge transfer, π–π inter­actions and hydrogen bonding.

link to html
The single-crystal X-ray structure of a hydrated mol­ecular salt based upon the tetra­protonated photo­product rtct-tetra­kis­(pyri­din-4-yl)cyclo­butane along with the sulfate anion is reported. The resulting square network is sustained by an array of N+—H⋯O hydrogen bonds where the photo­product acts as a four-connecting node.

link to html
The mechanochemical synthesis, crystal structure analysis, and Hirshfeld surface analysis of quininium aspirinate are reported. This salt was synthesized by liquid-assisted grinding and characterized by X-ray diffraction (single crystal and powder), FT–IR spectroscopy, thermogravimetry, differential scanning calorimetry, and aqueous solubility measurements. The amorphous powders obtained by neat grinding or neat ball milling crystallize upon storage into the salt reported.

link to html
This is the first contribution for form­ami­din­ate-based mono- and trivalent anti­mony chemistry. Metathesis reactions produced monomeric structures with the generic formula [Sb(DippForm)3–nXn] [n = 1 and X = Cl, Br and I; n = 2 and X = Br and I; DippForm is N,N′-bis­(2,6-diiso­propyl­phen­yl)form­ami­din­ate], synthesized by the addition of M(DippForm) (M = Li or Na) to the appropriate SbX3 (X = Cl, Br or I) com­pound. The sterically bulky form­ami­din­ate ligand highlights the ability to stabilize low-oxidation-state p-block com­pounds with unusual coordination modes.

Special and virtual issues

coverill.gif

Acta Crystallographica Section C has recently published special issues on

Polyoxometalates (November 2018)

NMR Crystallography (March 2017)

Scorpionates: a golden anniversary (November 2016)

Full details are available on the special issues page.

The latest virtual issue features Coordination polymers, with an introduction by Len Barbour.

What are the 'most read' articles from the recent special issues?

Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds