Results 11 to 20 of about 636,871 (343)

Structures of disodium hydrogen citrate monohydrate, Na2HC6H5O7(H2O), and diammonium sodium citrate, (NH4)2NaC6H5O7, from powder diffraction data

Acta Crystallographica Section E: Crystallographic Communications, 2020
The crystal structures of disodium hydrogen citrate monohydrate, Na2HC6H5O7(H2O), and diammonium sodium citrate, (NH4)2NaC6H5O7, have been solved and refined using laboratory X-ray powder diffraction data, and optimized using density functional ...
Jerry Hong, Shivang Bhaskar, Joseph T. Golab, James A. Kaduk   +3 more
doaj   +1 more source

Hydrogen radical-shuttle (HRS)-enabled photoredox synthesis of indanones via decarboxylative annulation

Nature Communications, 2021
Although hydrogen atom transfer is widely observed in synthetic organic chemistry, intramolecular hydrogen atom transfer between atoms separated by fewer than four bonds is kinetically slow. Here the authors show a method to form indanones, with hydrogen
Bo Yang, Shi-Jun Li, Yongdong Wang, Yu Lan, Shifa Zhu   +4 more
doaj   +1 more source

1-(2-Methylbenzoyl)-3-m-tolylthiourea

Acta Crystallographica Section E, 2008
The molecule of the title compound, C16H16N2OS, is not planar; the two aromatic rings are inclined to one another by 37.59 (9)°. There are intramolecular hydrogen bonds between the benzoyl O atom and the H atom of the thioamide N atom, and ...
B. M. Yamin, M. S. M. Yusof, S. Yousuf, T. N. D. T. Zakaria   +3 more
doaj   +1 more source

A Second Crystal Polymorph of Anilinium Picrate [PDF]

, 2004
The crystal structure of a second monoclinic polymorph of anilinium picrate shows a three-dimensional hydrogen-bonded polymer with strong primary interspecies interactions involving the proximal phenolate and adjacent nitro group O-atom acceptors and ...
Healy, Peter, Smith, Graham, Wermuth, Urs   +2 more
core   +2 more sources

Bromido(quinolin-8-ol-κ2N,O)(quinolin-8-olato-κ2N,O)zinc(II) methanol monosolvate

Acta Crystallographica Section E, 2010
The title compound, [ZnBr(C9H6NO)(C9H7NO)]·CH3OH, has its metal atom N,O-chelated by a neutral and a deprotonated 8-hydroxyquinoline ligand. The hydroxy unit of the neutral ligand is a hydrogen-bond donor to the methanol O atom and the alkoxy O ...
Seik Weng Ng, Mostafa M. Amini, Ezzatollah Najafi   +2 more
doaj   +1 more source

Classical approach in quantum physics [PDF]

, 2010
The application of a classical approach to various quantum problems - the secular perturbation approach to quantization of a hydrogen atom in external fields and a helium atom, the adiabatic switching method for calculation of a semiclassical spectrum of
A. Einstein, A.J. Dixon, D. Cabib, D. Richards, D. Wintgen, D. Wintgen, D.R. Herrick, D.S. Walton, D.W. Noid, E. A. Solov’ev, E. Fermi, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, E.A. Solov’ev, G. Ivanovski, G. Ivanovski, G. Tanner, H. Marxer, H.J. Silverstone, I.C. Percival, J. Neumann, K. Richter, L.H. Andersen, L.P. Gor’kov, M. Born, M.B. Shah, M.C. Gutzwiller, M.J. Raković, M.L. Du, M.L. Zimmerman, N.I. Afanas’eva, P. Ehrenfest, P.S. Epstein, R. Abrines, R.P. Feynman, T.P. Grozdanov, T.P. Grozdanov, T.P. Grozdanov, T.P. Grozdanov, V.N. Ostrovsky, V.V. Kolosov, W. Glab, W. Pauli, Yu.N. Demkov   +52 more
core   +1 more source

2-{[(Pyridin-2-yl)amino]methyl}phenol

Acta Crystallographica Section E, 2012
The planes of the aromatic rings of the title compound, C12H12N2O, are twisted by 50.33 (15)°. The phenol O atom is a hydrogen-bond donor to the pyridine N atom, resulting in the formation of an eight-membered ring in the molecule. The
Shan Gao, Seik Weng Ng
doaj   +1 more source

Possible strong symmetric hydrogen bonding in disodium trihydrogen bis(2,2'-oxydiacetate) nitrate [PDF]

, 2005
In the title compound, 2Na+·C8H11O10-·NO3-, the NaI atom is heptacoordinate with an approximately pentagonal-bipyramidal geometry. A possible strong symmetric hydrogen bond, with the H atom located at an inversion centre and an OO distance of 2.450 (2) Å,
Fritsch, S., Powell, A.K., Price, D.J., Wood, P.T.   +3 more
core   +1 more source

Elucidation of the Fourth-Order Generalized Schrodinger Problem for Hydrogen Atom using Frobenius Series Application

Journal of Applied Sciences and Environmental Management, 2023
The hydrogen atom is a fundamental system in quantum mechanics that has been extensively studied due to its simplicity and relevance to atomic physics.
D. J. Koffa, J. F. Omonile, E. O. Oladimeji, H. O. Edogbanya, S. O. Eghaghe, V. O. Obaje, T. T. Ibrahim   +6 more
doaj  

2-{1-[2-((2-Ammonioethyl){2-[1-(5-chloro-2-hydroxyphenyl)ethylideneamino]ethyl}amino)ethyliminio]ethyl}-4-chlorophenolate trifluoroacetate

Acta Crystallographica Section E, 2009
In the title ion-pair, C22H29Cl2N4O2+·C2F3O2−, ammonium–carboxylate N—H...O hydrogen bonds link two cations and two anions about a centre of inversion to generate a hydrogen-bonded tetramer.
Seik Weng Ng, Kong Mun Lo, Hapipah Mohd. Ali, See Mun Lee   +3 more
doaj   +1 more source