Zobrazeno 1 - 10 of 13 pro vyhledávání: '"C A, Kyriakidis"'
1
The estimation of four-phase structure invariants using the single difference of isomorphous structure factors
Autor: R. Peschar, H. Schenk, C. E. Kyriakidis
Publikováno v: Acta Crystallographica. Section A, 52, 77-87. International Union of Crystallography
The recently introduced approach of using the difference between isomorphous structure factors as a random variable in the derivation of joint probability distributions of isomorphous structure factors has been extended to secure the conditional join
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1ff766333eeef571acc8ae91da521fd
https://hdl.handle.net/11245/1.123093
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3
On direct-methods phase information from differences between isomorphous structure factors
Autor: C. E. Kyriakidis, H. Schenk, R. Peschar
Publikováno v: Acta Crystallographica Section A Foundations of Crystallography. 49:557-569
An efficient procedure is presented for the derivation of joint probability distributions of isomorphous data sets. The new technique is based on the use of the differences of isomorphous structure factors as random variables. It will be shown that t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8fccbcfe10f2b78d11d129749116fb82
https://doi.org/10.1107/s0108767392011632
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4
On the relation between the diffraction ratio, the doublet values and the reliability of the triplet estimates
Autor: H. Schenk, C. E. Kyriakidis, R. Peschar
Publikováno v: Acta Crystallographica Section A Foundations of Crystallography. 49:350-358
A diffraction ratio is proposed that predicts the differences to be expected between the intensities of two-isomorphous data sets. This ratio is important for the ab initio structure determination of isomorphously related structures by means of direc
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::87ea95426f35a34b08e2f0ee6e43d6b9
https://doi.org/10.1107/s0108767392009863
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5
On the doublet phase sums of isomorphous data sets
Autor: H. Schenk, R. Peschar, C. E. Kyriakidis
Publikováno v: Acta Crystallographica Section A Foundations of Crystallography. 49:359-369
The role of the doublet phase sum present among isomorphous data sets is investigated in connection with the triplet-phase-sum statistics. Several probabilistic and algebraic techniques are discussed to estimate the doublets. The combination of an al
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54c904fd63f27bed43ef45f5937ca568
https://doi.org/10.1107/s0108767392009851
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6
Crystal and molecular structure of thiophene-2-carboxaldehyde-o-chlorobenzoyl-hydrazone
Autor: C. E. Kyriakidis, K. G. Keramidas, R. Leloux, P. C. Christidis, P. J. Rentzeperis
Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 203:235-241
The crystal and molecular structure of the title compound, C12H9ClN2OS, has been determined from three-dimensional X-ray diffraction data. The structure is orthorhombic, Pca21, with a = 12.244(3), b = 10.664(2), c = 9.341(2) Å, and Z = 4. The struct
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c640d7d1dbc244d866f74bc1c7b12ff9
https://doi.org/10.1524/zkri.1993.203.part-2.235
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8
Crystal structure and spectra of bis[p-chloro-benzoyl-di-(2-pyridyl)ketonohydrazono]uranyl
Autor: P. C. Christidis, I. A. Tossidis, P. J. Rentzeperis, C. E. Kyriakidis
Publikováno v: Zeitschrift für Kristallographie. 200:15-23
The crystal structure of the title compound, (C 18 H 12 ClN 4 O 2 ) 2 U, has been determined from three-dimensional X-ray diffraction data. The structure is monoclinic, space group P2 1 / c , with a=7.545(1), b=19.890(1), c)12.201(1) A, β=110.66(1)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08839afffd1adfcd5e82417bdde2adb2
https://doi.org/10.1524/zkri.1992.200.1-2.15
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10
Crystal structure and spectra of Trichloro-p-chlorobenzoyl-2-furaldehydohydrazono bismuth(III)
Autor: P. C. Christidis, C. E. Kyriakidis, I. A. Tossidis, P. J. Rentzeperis, C. A. Bolos
Publikováno v: Zeitschrift für Kristallographie. 193:101-110
C 12 HgBiCl 4 N 2 O 2 cristallise dans P2 1 /c avec a=12,873, b=7,134, c=19,446 A, β=111,29 o , Z=4, affinement jusqu'a R=0,039. Le complexe forme des chaines polymeres du type −Cl-Bi...Cl-Bi... allongees approximativement parallelement a l'axe b.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2588e63040a77019ab29612021d614e4
https://doi.org/10.1524/zkri.1990.193.1-2.101
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