Zobrazeno 1 - 10
of 481
pro vyhledávání: '"R. A. G. de Graaff"'
Publikováno v:
Scopus-Elsevier
The synthesis and characterization of transition-metal coordination compounds with the novel, tetradentate ligand 1,6-bis(5-methyl-4-imidazolyl)-2,5-dithiahexane (abbreviated bidhx) are described. The nitrates have the general formula M(bidhx)(NO3)2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc41948581361d9eebcb60f9448de592
https://doi.org/10.1002/recl.19881070311
https://doi.org/10.1002/recl.19881070311
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 109:70-76
The synthesis and characterization of the copper tetrafluoroborate compound containing the bidentate N,S ligand 5-methyl-4-(ethylthiomethyl)imidazole (memi), [Cu(memi)2(BF4)2], is described. The activities of this compound and of [Cu(memi)2(H2O)2](NO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5b842b3ef9d8d1dfa3f64561a3d72d3
https://doi.org/10.1002/recl.19901090208
https://doi.org/10.1002/recl.19901090208
Publikováno v:
Acta Crystallographica. Section D: Biological Crystallography, D57(12), 1857-1862
The weak signal obtained from the anomalous scattering (at lambda = 1.54 A) of naturally occurring elements such as sulfur, phosphorus and ordered solvent chloride ions is used to determine the atomic positions of these atoms. Two examples are discus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23705cd50d1a7bf9e989ecd007f51d10
https://doi.org/10.1107/s0907444901016535
https://doi.org/10.1107/s0907444901016535
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 54:267-272
The possible usefulness of eigenvectors and eigenvalues of Karle–Hauptman matrices is examined. The eigenvalue spectra of structures with calculated and measured |U|'s are discussed and the result of several attempts at phase refinement are reporte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6ae80e630c741cc4279f9ec1d035548
https://doi.org/10.1107/s0108767397013603
https://doi.org/10.1107/s0108767397013603
Publikováno v:
Acta Crystallographica Section A Foundations of Crystallography. 54:262-266
Karle-Hauptman matrices may be used in an algebraic N approach to the phase problem. When eigenvalues and n eigenvectors are used, it is possible to obtain structural A, B information from Karle-Hauptman matrices of orders x/, ej h greater than N, de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ba14cac9d464d2c306edab014946ce1
https://doi.org/10.1107/s0108767397013597
https://doi.org/10.1107/s0108767397013597
Publikováno v:
Scopus-Elsevier
Four new compounds of the ligand 1-(2-pyridyl)-2-(2-thienyl)ethyne(pythio), viz. [M(pythio)2(NO3)2] (M Cu, Co and Ni) and [Zn(pythio)2Cl2] are described. The compounds prepared from the ligand and the metal salts in acetone or ethanol, are 2:1 li
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::67e33527682c8cec8dacead020b0fa0c
https://doi.org/10.1016/s0020-1693(97)05612-0
https://doi.org/10.1016/s0020-1693(97)05612-0
Publikováno v:
Materials Research Bulletin, 32, 657-662. Pergamon-elsevier science ltd
Materials Research Bulletin, 32, 6, pp. 657-662
Materials Research Bulletin, 32, 6, pp. 657-662
The structure of BaBi{sub 0.5}Sb{sub 0.5}O{sub 3} is determined by single crystal X-ray diffraction. It is an ordered perovskite, having rhombohedral symmetry, space group R {bar 3}m (No. 166), with lattice parameters a = 6.043(1) {angstrom} and {alp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a7a8a1f6306903549d400d0a9f7d93c
https://hdl.handle.net/2066/29373
https://hdl.handle.net/2066/29373
Autor:
Marina Biagini-Cingi, R. Prins, Franco Ugozzoli, Marc Drillon, Anna-Maria Manotti-Lanfredi, R. A. G. de Graaff, Jaap G. Haasnoot, Jan Reedijk, Pierre Rabu
Publikováno v:
Inorganica Chimica Acta. 248:35-44
The syntheses of three new trinuclear copper(II) complexes with the ligand 1,9-bis-(3-amino-4 H -triazol-5-yl)-3,7-dithianonane (attn) are described. The X-ray structures of two of them, [Cu 3 (attn) 2 (H 2 O) 2 Cl 2 ]Cl 4 (H 2 O) 4 ( 1 ) and [Cu 3 (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77070c7ca4767d6e5c276d59c467e752
https://doi.org/10.1016/0020-1693(95)04991-6
https://doi.org/10.1016/0020-1693(95)04991-6
Publikováno v:
Materials Research Bulletin. 31:279-282
The crystal structure of Ba4Os6O18Cl is described. Ba4Os6O18Cl, Mr = 2013.97, cubic, I23, a = 9.380(1) A, V = 825.3(3) A3, Z = 2, Dx = 8.104 Mg/m3, λ(MoKα) = 0.71069 A, F(000) = 1538, room temperature, final Rw = 0.019 for 203 observed Friedel pair
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4753567cdeeb6dbf33bfcff3a4b8d2d6
https://doi.org/10.1016/0025-5408(95)00194-8
https://doi.org/10.1016/0025-5408(95)00194-8
Publikováno v:
Materials Research Bulletin. 30:1489-1493
The crystal structure of CaMgGeO4 is described. CaMgGeO4, Mr = 200.9, orthorhombic, Pnam, a = 11.285(5) A, b = 5.016(2) A, c = 6.435(2) A, V = 364.36 A3, Dx = 3.664 Mg/m3.λ(MoKa = 0.71069 A, F(000) = 384, room temperature, final R = 0.045 for 1752 o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2fc0e4fee09baf1beab28d46df456a9
https://doi.org/10.1016/0025-5408(95)00158-1
https://doi.org/10.1016/0025-5408(95)00158-1