Results 71 to 80 of about 3,671 (216)

A systematic structural study of halogen bonding versus hydrogen bonding within competitive supramolecular systems

IUCrJ, 2015
As halogen bonds gain prevalence in supramolecular synthesis and materials chemistry, it has become necessary to examine more closely how such interactions compete with or complement hydrogen bonds whenever both are present within the same system.
Christer B. Aakeröy, Christine L. Spartz, Sean Dembowski, Savannah Dwyre, John Desper   +4 more
doaj   +1 more source

Adventures in crystal engineering [PDF]

, 2018
Crystals are all around us and are aesthetically pleasing as they arise from the ordered, three-dimensional assembly of chemical species which can be minerals (e.g. salt), macromolecules (e.g. proteins) or smaller chemical species (e.g.
Tiekink, Edward R. T. *
core  

Structural systematics of aryl-1,3-dithiane derivatives: crystal and energy-minimised structures, and Hirshfeld surface analysis [PDF]

, 2016
The crystal structure analysis of three aryl-1,3-dithiane derivatives, with aryl=4-methylphenyl (1), 4-chlorophenyl (2) and 2,4-dichlorophenyl (3), shows the three molecules to have very similar conformations, with the aryl ring lying on an approximate ...
Gozhina, Olga, Sousa Madureira, Lucas, Stefani, Hélio A., Tiekink, Edward R. T. *, Zukerman-Schpector, Julio   +4 more
core   +1 more source

Hypervalent Iodine‐Mediated Synthesis of Sulfones Using Organozinc Pivalates and Sulfinate Salts

European Journal of Organic Chemistry, EarlyView.
A general protocol for sulfone synthesis via sulfonyl‐containing hypervalent iodine reagents and organozinc pivalates is described. The method is practical, provides a broad scope of sulfone in moderate to high yield. bicyclo[1.1.1]pentane‐sulfones are also disclosed and a one‐pot synthesis of Diels–Alder adduct is presented. Sulfones are key motifs in
José C. Cunha, Gabriel G. Rocha, Fábio M. F. Santos, Stefan Bräse, M. Manuel B. Marques   +4 more
wiley   +1 more source

Crystal structure of 2-amino-3-ethyl-4,5-dihydro-1,3-thiazol-3-ium 3-chlorobenzoate

Acta Crystallographica Section E: Crystallographic Communications, 2015
The title salt, C5H11N2S+·C7H4ClO2−, comprises a 2-amino-3-ethyl-4,5-dihydro-1,3-thiazol-3-ium cation in which the five-membered ring adopts an envelope conformation with the methylene C adjacent to the S atom being the flap, and a planar 3 ...
Sara Maira M. Hizam, Bohari M. Yamin
doaj   +1 more source

Synthesis of a Carbon‐Linked Acyldepsipeptide Derivative

European Journal of Organic Chemistry, EarlyView.
The synthesis of a methylene‐linked acyldepsipeptide (ADEP) is reported. Success relied upon an improve method to generate a versatile vinyl glycine methyl ester synthon and a rationally optimized Grubb’s metathesis. NMR and in silico studies revealed an unusual trans–trans proline orientation for this new unnatural ADEP analog, advancing the ...
Katelyn G. Stevens-Davis, Xiaozheng Dou, Bo Hu, Yangxiong Li, Jiayuan Miao, Yu-Shan Lin, Adam S. Duerfeldt   +6 more
wiley   +1 more source

Synthesis and fluorine-mediated interactions in methanol-encapsulated solid state self-assembly of an isatin-thiazoline hybrid

, 2015
International audienceAn exciting isatin-thiazoline hybrid molecule 2 having -C=N-N=C- linkage has been synthesized in 88% yield by the reaction of 5-fluoroisatin with N-(4-fluorophenyl)hydrazinecarbothioamide followed by condensation of the resultant ...
Ahmad, Maqbool, Hadda, Taibi B., Naseer, Muhammad Moazzam, Pervez, Humayun, Toupet, Loic   +4 more
core   +3 more sources

The role of acid in the formation of hydrogen-bonded networks featuring 4,4'-dicarboxy-2,2'-bipyridine (H2dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H2dcbp)Cl2].H2O}2 and [Cu(H2dcbp)(NO3)2(H2O)] [PDF]

, 2005
Reported herein are the synthesis, structural and magnetic characterisation of two hydrogen-bonded networks featuring the 4,4?-dicarboxy-2,2?-bipyridine (H2dcbp) ligand: {[Cu(H2dcbp)(Cl)2]·H2O}2 1 and [Cu(H2dcbp)(NO3)2(H2O)] 2.
Aakeroy, Aakeroy, Aakeröy, Aakeröy, Balzani, Batten, Batten, Beatty, Biradha, Bleaney, Bourne, Braga, Brammer, Brammer, Braun, Burrows, Chapman, Chen, Conerney, Doyle, Doyle, Doyle, Earnshaw, Eddaoudi, Eskelinen, Etter, Feng, Gratzel, Holliday, James, Janiak, Kaes, Kahn, Keegan, Kitagawa, Kruger, Kruger, Kruger, Kruger, Liu, Marsh, Marsh, Matthews, Moulton, Oh, Oki, Pan, Rao, Robson, Rodriguez, Rosi, Schareina, Schareina, Sekiya, Sheldrick, Steiner, Swiegers, Tuna, Tynan, Tynan, Tynan, Tynan, Ward, Yaghi   +63 more
core   +1 more source

Bis‐Furans: A Sustainable Source of Diverse Molecular Architectures

European Journal of Organic Chemistry, Volume 29, Issue 10, 9 March 2026.
A concise synthetic route to diverse acyclic and heterocyclic compounds has been developed by combining hetero‐Diels–Alder reactions, DBU‐promoted ring openings, and Lewis base‐catalyzed annulations. Nitrosoalkenes reacted with furan derivatives to form 4a,7a‐dihydro‐4H‐furo[2,3‐e][1,2]oxazines, which underwent DBU‐promoted rearrangements to 6H‐1,2 ...
Ana L. Cardoso, José A. Paixão, Teresa M. V. D. Pinho e Melo   +2 more
wiley   +1 more source

Perplexing Coordination Behaviour of Potentially Bridging Bipyridyl-Type Ligands in the Coordination Chemistry of Zinc and Cadmium 1,1-Dithiolate Compounds [PDF]

, 2018
The X-ray structural chemistry of zinc and cadmium 1,1-dithiolates (for example, xanthate, dithiophosphate and dithiocarbamate) with potentially bridging bipyridyl-type ligands (for example, 4,40-bipyridine) is reviewed.
Tiekink, Edward R. T. *
core   +1 more source