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Search query: heterocyclic
2843 articles match your search "heterocyclic"Results 1 to 10, sorted by relevance:
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Analysis of the coordination of the Sn to the indenyl ring shows that the Sn interacts in an η2 fashion. A database survey showed that whilst this coordination mode is unusual for Ge and Pb compounds, Sn displays a wider range of coordination modes to cyclopentadienyl ligands and their derivatives.
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The crystal structures of two chromium(II) acetate complexes with N-heterocyclic carbene coligands were determined.
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The thermal stability and solubility of chalcones increase with the number of heterocyclic rings which are present in the structure. (E)-1-(1H-Pyrrol-2-yl)-3-(thiophen-2-yl)prop-2-en-1-one and (E)-3-phenyl-1-(1H-pyrrol-2-yl)prop-2-en-1-one are compared with trans-chalcone, also known as (2E)-1,3-diphenylprop-2-en-1-one.
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The current study demonstrates the cocrystallization of pyrazinamide with homophthalic acid employing the reflux method, and the cocrystallization of the commercially available heterocyclic drug carbamazepine with 5-chlorosalicylic acid, trans-cinnamic acid and nicotinamide. The synthesized cocrystals were characterized by FT–IR, PXRD and SC-XRD techniques, followed by thermal stability studies based on DSC and TGA analysis.
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Utilizing the N-heterocyclic chalcogenones hexahydro-1,3-bis(2,4,6-trimethylphenyl)-2H-1,3-diazepine-2-thione (SDiazMesS) and hexahydro-1,3-bis(2,4,6-trimethylphenyl)-2H-1,3-diazepine-2-selone (SDiazMesSe) as halogen-bond acceptors, 24 new cocrystals were prepared. The solid-state structures of the parent molecules were also determined, along with those of their acetonitrile solvates.
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A new neutral triazole-based N-heterocyclic carbene rhodium(I) complex [RhCl(C8H12)(C8H15N3)], has been synthesized and structurally characterized. The complex crystallizes with two molecules in the asymmetric unit. The rhodium center has a distorted square-planar conformation, formed by a cycloocta-1,5-diene (COD) ligand, an N-heterocyclic carbene (NHC) ligand, and a chloride ligand.
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The title compound represents the first reported example of a [1,3]oxatellurole, prepared in three steps from 3,4-dimethylphenol. Both independent molecules are folded along their Te
O axes, with an average angle φ = 25.1° between the Te–C–O planes and the remaining non-hydrogen atoms. A Hirshfeld plot indicates a weak intermolecular interaction between the two tellurium atoms in the asymmetric unit.
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The synthesis and crystal structure of a new triazole-based N-heterocyclic carbene iridium(I) cationic complex with a tetrafluoridoborate counter-anion and solvating dichloromethane is reported. The IrI center of the cationic complex has a distorted square-planar conformation, formed by a bidentate cycloocta-1,5-diene (COD) ligand, an N-heterocyclic carbene, and a tripheylphosphane ligand. There are weak hydrogen-bonding interactions between C—H groupings of the iridium complex and F atoms of the [BF4]− counter-ions.
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The central IrI atom of the cationic complex of the title compound, [Ir(C8H12)(C18H15P)(C6H11N3)][BF4] ·0.8CH2Cl2, exhibits a distorted square-planar coordination environment.
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A series of 18 cocrystals were obtained through the combination of the heterocyclic molecules imidazolidine-2-thione, 2-mercaptobenzimidazole, 2-mercapto-5-methylbenzimidazole, 2-mercaptobenzoxazole, and 2-mercaptobenzothiazole with the common halogen-bond donors 1,2-, 1,3-, and 1,4-diiodotetrafluorobenzene, 1,3,5-trifluorotriiodobenzene, and tetraiodoethylene. A rich series of hydrogen-, halogen-, and chalcogen-bonding interactions were observed.