Zobrazeno 1 - 10
of 16
pro vyhledávání: '"M. R. Pressprich"'
Publikováno v:
Journal of Applied Crystallography. 31:128-135
New photocrystallographic and cryogenic techniques are tested in a 40 K study of the 2.44 ms lifetime excited state of [RhBr2(pyridine-d5)]Br. A modulation method is used in which a laser beam is interrupted by a mechanical chopper with a preselected
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9797b65dd76ba1c4d8a1976c2d5d848e
https://doi.org/10.1107/s0021889897007802
https://doi.org/10.1107/s0021889897007802
Publikováno v:
Journal of the American Chemical Society. 119:2669-2678
The geometries of two known metastable states of sodium nitroprusside dihydrate, Na2[Fe(CN)5NO]·2H2O, and that of the ground state have been analyzed by X-ray diffraction at 50 K, a temperature at which no decay of metastable-state concentration wit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbd09fdef0d6d3a9d2578043f541f25f
https://doi.org/10.1021/ja9625743
https://doi.org/10.1021/ja9625743
Publikováno v:
Journal of Applied Crystallography. 27:727-732
Instrumentation for measuring the X-ray diffraction pattern of optically excited crystals is described. The experiment uses a high-power (~1 W) laser and a single-crystal diffractometer equipped with a helium cryostat (T < 70 K). The laser beam is mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee04d80eba1654fd7ea98c6f74c49efb
https://doi.org/10.1107/s0021889894002724
https://doi.org/10.1107/s0021889894002724
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 49:216-219
The valence-contrast diffraction method is used at the Nb K edge in the analysis of the mixed-valence solid NbSe3. The NbSe3 structure consists of three parallel chains of prismatically coordinated Nb atoms and undergoes two low-temperature Peierls-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::026b6da9f62698c485da75c9d0333a6c
https://doi.org/10.1107/s0108767392011279
https://doi.org/10.1107/s0108767392011279
Autor:
M. R. Pressprich, R. D. Willett
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 47:1188-1191
Cristallisation de (I) dans P2 1 /c avec a=9,859, b=16,762, c=13,716 A, β=90,05°, Z=4; affinement jusqu'a R=0,073. Cristallisation de (II) dans P2 1 /c avec a=9,489, b=15,985, c=13,106 A, β=89,52°, Z=4; affinement jusqu'a R=0,088. Les deux struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d15186b29d64d663a0a733ada619c3b
https://doi.org/10.1107/s0108270190012379
https://doi.org/10.1107/s0108270190012379
Publikováno v:
Acta Crystallographica Section B Structural Science. 47:337-344
Les composes, isostructuraux, possedent des structures quadratiques inhabituelles, constituees de couches d'anions MCl 4 2− empiles perpendiculairement a l'axe c et alternant avec des couches de cations (CH 3 ) 4 As + . La structure moyenne de cett
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3da6ceafdaf2d95c6e4e8800394cfe4
https://doi.org/10.1107/s0108768190013374
https://doi.org/10.1107/s0108768190013374
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 50:1087-1089
The structure of bis(tetraphenylphosphonium) octa-μ 3 -chloro-hexachlorohexamolybdate(2-) is reported. The structure consists of an [Mo 6 Cl 14 ] 2- cluster anion having a crystallographic center of inversion and two (inversion) symmetry-related tet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e5082625f55f8df67a8082c9284e96e
https://doi.org/10.1107/s0108270193013149
https://doi.org/10.1107/s0108270193013149
Publikováno v:
Acta Crystallographica Section C Crystal Structure Communications. 46:1635-1637
2 C 4 H 5 N 2 O + •Cr 2 O 7 2− cristallise dans P2 1 avec a=8,003, b=6,132, c=14,493 A, β=94,50 o , Z=2; affinement jusqu'a R=0,0602. La structure comprend des anions dichromate discrets 2 fois negatifs lies par des liaisons hydrogene aux cation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48464c88b3c69c6186cb3e93a4dd5f45
https://doi.org/10.1107/s0108270189013752
https://doi.org/10.1107/s0108270189013752
Publikováno v:
ChemInform. 21
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::418e4fc3680dc8f42393a017a244dbba
https://doi.org/10.1002/chin.199044055
https://doi.org/10.1002/chin.199044055
Publikováno v:
Journal of the American Chemical Society. 114:9214-9215
The tunability of synchrotron radiation makes it possible to vary the scattering power of atoms of specific elements in the vicinity of the atomic absorption edges. The effect is due to the contribution of low-lying electronically excited states to t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5840d77a18b5c0465158290b3da8d8aa
https://doi.org/10.1021/ja00049a079
https://doi.org/10.1021/ja00049a079