Search results for "Isonicotinic acid"
showing 10 items of 13 documents
Chloride–hydrogen interactions of picolinic, nicotinic and isonicotinic acid chloride hydrochlorides in the crystalline state
2003
The crystal structures of the three isomers of the chemically labile pyridinecarboxylic acid chloride hydrochlorides were analyzed in order to study the weak interactions of the chloride anion with hydrogens. The chloride anions in the crystal structure of 1a have a slightly distorted square-planar interaction sphere with four hydrogens in the equatorial plane (plane of the molecule) with Cl−⋯H distances varying from 2.041(1) A [NH+⋯Cl−] to 2.933(1) A [CH⋯Cl−]. Nicotinic and isonicotinic acid chloride hydrochloride 1b and 1c show that chloride anion has a crucial role in the formation of bridged dimeric structures. The crystal lattices of 1b and 1c manifest similar herring-bone packing patt…
The structure of trinuclear Cu(II) complex with isonicotinic acid N-oxide, pentaaquadi-μ-hydroxobis-μ-(ionicotinato N-oxide)bis(isonicotinato N-oxide…
1983
Abstract A new trinuclear Cu(II) complex with isonicotinic acid N-oxide, [Cu3(N-inicO)4(OH)2(H2O)5·2H2O, has been prepared and its crystal structure determined by X-ray analysis. The complex crystallizes in the monoclinic space group P2/c with a = 12.051(4), b = 7.043(2), c = 19.825(6) A, β = 98.51(2)° and Z = 2. The arrangement of the three Cu atoms is triangular, with distances of 3.365(1) A between the central and terminal Cu atoms. The coppers are pentacoordinated; the coordination geometry is tetrahedral distorted square pyramidal for the terminal Cu atoms and elongated square pyramidal for the central Cu atom. Two hydroxo ligands and two of the four isonicotinato N-oxide ligands throu…
Single layers of a multifunctional laminar Cu(I,II) coordination polymer.
2010
A multifunctional bidimensional mixed-valence copper coordination polymer [Cu2Br(IN)2]n (IN = isonicotinato) has been characterized in crystal phase and isolated on graphite surface as single sheets.
Electrical conductivity and strong luminescence in copper Iodide double chains with isonicotinato derivatives
2015
Direct reactions between CuI and isonicotinic acid (HIN) or the corresponding esters, ethyl isonicotinate (EtIN) or methyl isonicotinate (MeIN), give rise to the formation of the coordination polymers [CuI(L)] with L=EtIN (1), MeIN (2) and HIN (3). Polymers 1-3 show similar structures based on a CuI double chain in which ethyl-, methyl isonicotinate or isonicotinic acid are coordinated as terminal ligands. Albeit, their supramolecular architecture differs considerably, affecting the distances and angles of the central CuI double chains and thereby their physical properties. Hence, the photoluminescence shows remarkable differences; 1 and 2 show a strong yellow emission, whereas 3 displays a…
The electrochemical reduction of thioisonicotinamide in an aqueous medium
1998
Abstract The electrochemical reduction of thioisonicotinamide NRCSNH 2 has been examined in an aqueous medium between H 0 =−1 and pH=13.7. As shown by cyclic voltammetry and polarography, a global 2e − reversible transfer is followed by two successive first-order chemical reactions and a 2e − , 2H + reduction (EC 1 C 2 E process). A mechanism is proposed, beginning with the 2e − reduction of NRCSNH 2 to the formal diionized form NRC − (SH)(NH 3 + ), the first chemical reaction, C 1 , being a formal proton transfer which yields the 4- gem aminosulfanylmethylpyridine; the rate constant of this reaction is 2×10 4 s −1 in acidic medium and diminishes in neutral medium. The second process, C 2 …
Quantitative estimation of the antiferromagnetic interaction between Cu(II) and Sm(III) in two dimensional heterometallic coordination polymer with i…
2013
Abstract The syntheses, structure and magnetic property of a novel two dimensional 3d–4f coordination polymer 2∞[CuSmL(NO3)2(IN)], 1 (L2− = N, N′- propylenedi (3-ehoxysalicylideneiminato), the dianion of the Schiff base obtained from the 2:1 condensation of 3-ethoxysalicylaldehyde with 1,3-propanediamine, IN− = the isonicotinate ion) has been reported. The heterobinuclear units are connected through exo-bidentate ligands IN−, leading to an extended 2D structure. A fit of the magnetic susceptibility data yields gCu = 2.109, gSm = 0.476, JCuSm = − 0.893 cm− 1, θ = − 3.37 K, and TIP = 0.001257 emu K mol− 1 with a good discrepancy factor of Rχ = 4.4 × 10− 5. This is the first quantitative esti…
CCDC 1580668: Experimental Crystal Structure Determination
2018
Related Article: Javier Conesa-Egea, Carlos. D. Redondo, J. Ignacio Martínez, Carlos J. Gómez-García, Óscar Castillo, Félix Zamora, Pilar Amo-Ochoa|2018|Inorg.Chem.|57|7568|doi:10.1021/acs.inorgchem.8b00364
CCDC 1865233: Experimental Crystal Structure Determination
2018
Related Article: Javier Conesa-Egea, Carlos. D. Redondo, J. Ignacio Martínez, Carlos J. Gómez-García, Óscar Castillo, Félix Zamora, Pilar Amo-Ochoa|2018|Inorg.Chem.|57|7568|doi:10.1021/acs.inorgchem.8b00364
CCDC 1047310: Experimental Crystal Structure Determination
2015
Related Article: Khaled Hassanein, Javier Conesa-Egea, Salome Delgado, Oscar Castillo, Samia Benmansour, José I. Martínez, Gonzalo Abellán, Carlos J. Gómez-García, Félix Zamora, Pilar Amo-Ochoa|2015|Chem.-Eur.J.|21|17282|doi:10.1002/chem.201502131
CCDC 1486674: Experimental Crystal Structure Determination
2016
Related Article: Alexandre Abhervé, María José Recio-Carretero, Maurici López-Jordà, Juan Modesto Clemente-Juan, Josep Canet-Ferrer, Andrés Cantarero, Miguel Clemente-León, and Eugenio Coronado|2016|Inorg.Chem.|55|9361|doi:10.1021/acs.inorgchem.6b01508