Search results for "Onium"
showing 10 items of 2091 documents
The structure of bis(trimethylammonium) undecachlorotriantimonate(III) [(CH3)3NH]2Sb3Cl11 containing a novel antimony(III) anion
1999
The structure of [(CH3)3NH]2Sb3Cl11 (space group P21/n; a = 10.374(2), b = 23.723(5), c = 11.884(2) Å, β = 113.46(3)°; V = 2682.9(9) Å3) consists of a structurally novel [Sb3Cl2−11] anion and two crystallographically nonequivalent trimethylammonium cations. The anion is composed of three deformed octahedra in the asymmetric part of the unit cell. The octahedra are connected with each other by edges and corners forming a characteristic polyanionic layer. Trimethylammonium cations, one ordered and one disordered, are connected to the inorganic sublattice by N—H· · ·Cl hydrogen bonds.
Crystal structure of allylammonium hydrogen succinate at 100 K
2014
The asymmetric unit of the title compound, C2H8N+·C4H5O4−, consists of two allylammonium cations and two hydrogen succinate anions (Z′ = 2). One of the cations has a near-perfectsyn-periplanar (cis) conformation with an N—C—C—C torsion angle of 0.4 (3)°, while the other is characterized by agaucheconformation and a torsion angle of 102.5 (3)°. Regarding the anions, three out of four carboxilic groups are twisted with respect to the central C–CH2–CH2–C group [dihedral angles = 24.4 (2), 31.2 (2) and 40.4 (2)°], the remaining one being instead almost coplanar, with a dihedral angle of 4.0 (2)°. In the crystal, there are two very short, near linear O—H...O hydrogen bonds between anions, with t…
Crystal structure of bis-(allyl-ammonium) oxalate.
2014
The title salt, 2C3H8N+·C2O42−, crystallized with six independent allylammonium cations and three independent oxalate dianions in the asymmetric unit. One of the oxalate dianions is nearly planar [dihedral angle between CO2planes = 1.91 (19)°], while the other two are twisted with angles of 11.3 (3) and 26.09 (13)°. One cation has a synperiplanar (cis) conformation with an N—C—C—C torsion angle of 0.9 (3)°, whereas the five remaining cations are characterized bygauchearrangements, with the N—C—C—C torsion angles ranging from 115.9 (12) to 128.8 (3)°. One of the allylammonium cations is positionally disordered (fixed occupancy ratio = 0.45:0.55). In the crystal, the cations and anions are co…
Structure and phase transitions in ethylenediammonium dichloride and its salts with antimony trichloride
2000
During the mixing of ethylenediammonium dichloride and antimony trichloride except of reported earlier [NH3(CH2)2NH3]5(Sb2Cl11)2 · 4 H2O a new salt [NH3(CH2)2NH3](SbCl4)2 was obtained. The crystals are monoclinic at 295 K, space group C2/m, a = 13.829(3), b = 7.408(1), c = 7.588(2) Å; β = 103.18(3)°; V = 756.9(3) Å3; Z = 2; dc = 2.585, dm = 2.56(2) g · cm–3. The structure consists of anionic sublattice built of Sb2Cl82– units composed of two SbCl52– square pyramids connected by edge. The ethylenediammonium cations are located in anionic cavities. The cations are disordered. Each methylene carbon atom is split between two positions. The X‐ray diffraction, DSC, TGA and dilatometric methods we…
CCDC 1045982: Experimental Crystal Structure Determination
2015
Related Article: Michele Bedin, Alavi Karim, Marcus Reitti, Anna-Carin C. Carlsson, Filip Topić, Mario Cetina, Fangfang Pan, Vaclav Havel, Fatima Al-Ameri, Vladimir Sindelar, Kari Rissanen, Jürgen Gräfenstein, Máté Erdélyi|2015|Chemical Science|6|3746|doi:10.1039/C5SC01053E
CCDC 257790: Experimental Crystal Structure Determination
2005
Related Article: R.H.Laye, F.K.Larsen, J.Overgaard, C.A.Muryn, E.J.L.McInnes, E.Rentschler, V.Sanchez, S.J.Teat, H.U.Gudel, O.Waldmann, G.A.Timco, R.E.P.Winpenny|2005|Chem.Commun.||1125|doi:10.1039/b416770h
CCDC 1825461: Experimental Crystal Structure Determination
2018
Related Article: Quentin Bonnin, Sook-Yen Wong, Cedric Balan, Virginie Comte, Raluca Malacea, Marie-Jose Penouilh, Philippe Richard, Gerald Kehr, Adrien T. Normand, Gerhard Erker, Pierre Le Gendre|2018|Eur.J.Inorg.Chem.|2018|3813|doi:10.1002/ejic.201800636
"Figure 20" of "Ground and excited charmonium state production in p+p collisions at sqrt(s)=200 GeV"
2023
Transverse momentum dependence of the $J/\psi$ dimuon differential cross section obtained in the muon arms in 2006 and 2008 Runs. Uncertainties are point-to-point uncorrelated (uncorr.) (statistical and uncorrelated systematic uncertainties) and correlated systematic (corr.) uncertainties. The global uncertainty is 10%.
"Table 2" of "Ground and excited charmonium state production in p+p collisions at sqrt(s)=200 GeV"
2023
Foreground, background counts in the $J/\psi$ mass region, and the signal count.
"Table 6b" of "Ground and excited charmonium state production in p+p collisions at sqrt(s)=200 GeV"
2023
$\psi^{\prime}(J/\psi)$ dielectron yield ratio measured at $|y|$ < 0.35 followed by point-to-point uncorrelated (uncorr.) (statistical and uncorrelated systematic uncertainties) and correlated systematic (corr.) uncertainties.