Results 41 to 50 of about 3,703 (215)

New Titanium Imido Synthons:  Syntheses and Supramolecular Structures

open access: yesInorganic Chemistry, 2005
Reactions of Ti(NMe(2))(2)Cl(2) with a wide range of primary alkyl and arylamines RNH(2) afforded the corresponding 5-coordinate imido titanium compounds Ti(NR)Cl(2)(NHMe(2))(2) (R = (t)Bu (1), (i)Pr (2), CH(2)Ph (3), Ph (4), 2,6-C(6)H(3)Me(2) (5), 2,6-C(6)H(3)(i)Pr(2) (6), 2,4,6-C(6)H(2)F(3) (7), 2,3,5,6-C(6)HF(4) (8), C(6)F(5) (9), 4-C(6)H(4)Cl (10),
Adams, Nico   +8 more
openaire   +3 more sources

Hydrogen-Bonding Motifs in Piperazinediium Salts

open access: yesCrystals, 2014
Four novel organic salts of piperazine and 2-methylpiperazine with p-toluenesulfonic acid and chloroacetic acid have been synthesized and structurally characterized.
Chris S. Hawes   +3 more
doaj   +1 more source

Exploiting Supramolecular Synthons in Cocrystals of Two Racetams with 4-Hydroxybenzoic Acid and 4-Hydroxybenzamide Coformers

open access: yesChemistry, 2023
Structures of three cocrystals of nootropic racetams were studied. They included two cocrystals of phenylpiracetam (PPA) with 4-hydroxybenzoic acid (HBA) with different stoichiometries, PPA·HBA and PPA·2HBA, and cocrystal of 2-(4-phenyl-2-oxopyrrolidin-1-
Jason Marquez   +6 more
doaj   +1 more source

Self-assembly of cis- and trans-cyclic-1,2-diols. Supramolecular synthon equivalence between cis-1,2-diols and primary amides [PDF]

open access: yes, 2005
Inspite of the fact that the self-assembly of compounds containing hydroxyl group has been enormously documented in the literature, our studies with aliphatic cyclic diols have offered the unique opportunity to examine the self-assembly of gauche and ...
Begum, N.S.   +3 more
core   +1 more source

Supramolecular assemblies of copper(II) complexes: supramolecular synthon transferability and magnetic properties [PDF]

open access: yesActa Crystallographica Section A Foundations and Advances, 2019
In the pursuit of new technologies there is exigency for novel materials with desired physical and chemical properties. Despite the fact that metal-based crystalline solids provide an access to properties that are typically unavailable or difficult to achieve in metal-free settings (i.e. magnetic or optical).
Borovina, Mladen   +3 more
openaire   +3 more sources

Crystal structure of 2,4-diamino-6-oxo-3,6-dihydropyrimidin-1-ium p-toluenesulfonate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
In the title salt, C4H7N4O+·C7H7O3S−, the 2,6-diamino-4-oxo-1,3-dihydropyrimidin-1-ium cation interacts with the sulfonate group of the p-toluenesulfonate anion via a pair of N—H...O hydrogen bonds, forming a hetero-synthon R22(8) that mimics the role of
Krishnasamy Mamallan   +3 more
doaj   +1 more source

Is there any point in making co-crystals? [PDF]

open access: yes, 2015
Citation: Aakeroy, C. (2015). Is there any point in making co-crystals? Acta Crystallographica Section B-Structural Science Crystal Engineering and Materials, 71, 387-391.
Aakeröy, Christer B.
core   +1 more source

N-(4-Bromophenyl)methoxycarbothioamide [PDF]

open access: yes, 2018
The synthesis, spectroscopic and crystallographic characterisation of the title compound, O-methyl-N-4-bromophenyl thiocarbamate, MeOC(=S)N(H)PhBr-4 (1), are described.
Tiekink, Edward R. T. *   +1 more
core   +2 more sources

Crystal design approaches for the synthesis of paracetamol co-crystals [PDF]

open access: yes, 2012
Crystal engineering principles were used to design three new co-crystals of paracetamol. A variety of potential cocrystal formers were initially identified from a search of the Cambridge Structural Database for molecules with complementary hydrogen-bond ...
Kraft, A.   +3 more
core   +1 more source

Integrating and Exploiting Molecular, Supramolecular, and Time Crystal Synthons in Advanced Synthesis

open access: yesCrystals
Molecular reactions occur through functional groups that drive covalent synthesis. These reactions often proceed via catalytic processes, leading to the formation of time crystals, which can be integrated into shared molecules or reactions—a concept ...
Indrajit Chakraborty   +4 more
doaj   +1 more source

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