Zobrazeno 1 - 10
of 264
pro vyhledávání: '"B. KANELLAKOPULOS"'
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 52:597-600
The crystal structure of neptunocene, [Np(C8H8)2], has been determined by single-crystal X-ray diffraction and is isostructural with thorocene and uranocene. A number of crystallographic and geometric parameters of these three compounds are compared.
Autor:
Philippe E. Raison, P. J. Brown, A. Gonthier-Vassal, B. Kanellakopulos, J. M. Kiat, P. Schweiss, G. H. Lander, Christos Apostolidis, Jean Rebizant, A. Delapalme
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 209:720-726
We have used neutron and X-ray diffraction techniques on both single crystal and polycrystalline samples to examine the symmetry of the unit cell of the organometallic compound uranium tris(cyclopentadienyl)chlorine, U(C5H5)3Cl, as a function of temp
Autor:
B. Kanellakopulos, Jean Rebizant, Philippe E. Raison, A. Delapalme, P. Schweiss, G. H. Lander
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 209:727-732
The structure of uranium tris(cyclopentadienyl)chlorine [U(C5H5)3]Cl [Mr = 468.45, Z = 4, Dx = 2.194 g/cc] exhibits two phase transitions between 5 K and 300 K. In this paper we discuss the crystallographic structures, which show a transition at 245
Autor:
B. Kanellakopulos, Philippe E. Raison, A. Delapalme, J. H. Williams, C.J. Carlile, R. Kahn, G. H. Lander
Publikováno v:
Molecular Physics. 81:369-383
Inelastic neutron scattering experiments have been performed on polycrystalline samples of U(C5H5)3Cl, from 5 K to 300 K, to examine the quasielastic scattering that occurs from the hydrogen atoms in the cyclopentadienyl rings. Analysis of the scatte
Publikováno v:
The Journal of Chemical Physics. 99:9195-9201
The hysteresis at the spin‐state transition (Tc≂180.6 K) in [Fe(bt)2(NCS)2] has been studied by magnetic susceptibility measurements (bt=2,2’‐bi‐2‐thiazoline). Two series of minor hysteresis loops between fixed temperatures TA=177.0, TB=1
Autor:
M. Bickel, B. Kanellakopulos
Publikováno v:
Journal of Solid State Chemistry. 107:273-284
Magnetic data for ternary actinoid oxides with central ions exhibiting the [Rn]5ƒn electronic structure have been investigated to establish systematics for magnetic behavior and/or relations between structure and magnetism. All compounds with [Rn]5
Publikováno v:
ChemInform. 22
The crystallographic and spectroscopic properties, as well as the magnetic susceptibility of Na4NpO5, were found to be in agreement with a tetragonal structure, space group C 4h − I4 m , already proposed by previous authors. The lattice constants w
Publikováno v:
ChemInform. 23
The crystallographic and spectroscopic properties as well as the magnetic susceptibilities of Sr 3 UO 6 , Ca 3 U0 6 , Sr 3 Np0 6 and Ca 3 Np0 6 were determined. Data for the uranates are in agreement with structures proposed earlier. From X-ray powde
Publikováno v:
Journal of Alloys and Compounds. 187:17-29
The crystallographic and spectroscopic properties as well as the magnetic susceptibilities of Sr 3 UO 6 , Ca 3 U0 6 , Sr 3 Np0 6 and Ca 3 Np0 6 were determined. Data for the uranates are in agreement with structures proposed earlier. From X-ray powde
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 48:1161-1164
(I) cristallise dans P2 1 /n avec a = 8,162, b = 6,809 et c = 13,089 A, β = 91,24 °, Z = 2; affinement jusqu'a R = 0,037. (II) cristallise dans P2 1 /n avec a = 8,321, b = 6,890 et c = 13,097 A, β = 91,55 °, Z = 2; affinement jusqu'a R = 0,0463.