Výsledky vyhledávání - "G. Adiwidjaja"

Tsumgallite, GaO(OH), a new mineral from the Tsumeb mine, Tsumeb, Namibia

Autor: K.-H. Klaska, Georg Gebhard, G. Adiwidjaja, Jochen Schlüter

Publikováno v: Neues Jahrbuch für Mineralogie - Monatshefte. 2003:521-527

The new mineral tsumgallite is a gallium oxide hydroxide, has the ideal chemical formular GaO(OH), is orthorhombic, space group Pbnm, with a = 4.512(5) A, b = 9.772(8) A, c = 2.967(4) A, cell volume 130.8(2) A 3 , Z = 4, from powder data. Cell parame

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b4b20fb87317e7b256fedc636e21b99
https://doi.org/10.1127/0028-3649/2003/2003-0521

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The Disordered High-Temperature Structure of (NH4)3H(SO4)2 and Its Relationship to the Room-Temperature Phase

Autor: Ulli Bismayer, L. Schwalowsky, Karen Friese, G. Adiwidjaja, Mois I. Aroyo

Publikováno v: Journal of Solid State Chemistry. 165:136-147

The structure of letovicite, (NH4)3H(SO4)2 has been redetermined at 293 and 420 K. At room temperature the structure crystallizes monoclinic, space group C12/c1 (no. 15), with lattice parameters a=15.418(5) A, b=5.905(5) A, c=10.223(5) A and β=102.8

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b99ad2eac8e2f84e65acca645e275157
https://doi.org/10.1006/jssc.2002.9516

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The Reaction of Cyanothioformamide with Isocyanates − Formation of a Disulfide by Reduction of a Thiocarbonyl Group

Autor: G. Adiwidjaja, Roger Ketcham, Ernst Schaumann

Publikováno v: European Journal of Organic Chemistry. 2001:1695-1699

The reactions of the title compounds are governed by sulfur redox chemistry. Thus, cyanothioformamide 2 reacts with aryl isocyanates 3a−c to give bis[3-aryl-1-(arylcarbamoyl)-2-oxo-4-(arylcarbamoylimino)imidazolidin-5-yl] disulfides 6, as shown by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2823a7e8cf78114007786e94aceb58a4
https://doi.org/10.1002/1099-0690(200105)2001:9<1695::aid-ejoc1695>3.0.co

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The crystal structure of the new mineral wilhelmkleinite – ZnFe3+ 2(OH)2AsO4)2

Autor: K.-H. Klaska, Jochen Schlüter, P. B. Moore, G. Adiwidjaja, K. Friese

Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 215:96-101

The new mineral wilhelmkleinite has ideal chemical composition ZnFe 3+ 2(OH)2(AsO4)2 and crystallizes monoclinic, space group P21/n, Z = 2 with lattice parameters a = 6.631 ( 1) Å, b = 7.611 (1) Å, c = 7.377 ( 1) Å and β = 91.80( 1)°. The struct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::384b8c56929399e948835511afa88026
https://doi.org/10.1524/zkri.2000.215.2.96

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An infrared spectroscopic and single-crystal X-ray study of malayaite, CaSnSiO 5

Autor: Ulli Bismayer, H. W. Meyer, G. Adiwidjaja, Ming Zhang, Lee A. Groat, Ekhard K. H. Salje

Publikováno v: Physics and Chemistry of Minerals. 26:546-553

Powder infrared spectroscopy and X-ray diffraction techniques on single crystals were used to study the thermal behaviour of malayaite, CaSnSiO5. Infrared spectra show a discontinuity in the temperature evolution of phonon frequencies and absorbance

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::247dc86c52aab9630416b7fa16144c38
https://doi.org/10.1007/s002690050218

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The crystal structure of kastningite (Mn, Fe, Mg) (H2O)4[Al2(OH)2(H2O)2(PO4)2] · 2 H2O – a new hydroxyl aquated orthophosphate hydrate mineral

Autor: Jochen Schlüter, K. Friese, G. Adiwidjaja, K.-H. Klaska

Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 214:465-468

The crystal structure of kastningite, a new mineral from Waidhaus, Bavaria, Germany, has been determined. Ideal formula from X-ray structure analysis is Mn(H2O)4[Al2(OH)2(H2O)2(PO4)2] · 2 H2O. Lattice parameters are a = 10.205(1) Å, b = 10.504(1) �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::060c6625c26ba1ee9e444505201e2825
https://doi.org/10.1524/zkri.1999.214.8.465

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Structure of the compounds La3AlGe5O16, La3GaGe5O16 and Ce3GaGe5O16

Autor: C. Claus, M. Ruks, M. Bröker, K. Friese, O. Jarchow, I. Wozniak, G. Adiwidjaja, K.-H. Klaska

Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 213:223-227

Hydrothermal synthesis in the systems LaCl3 (CeCl3)–Al(OH)3 (Ga2O3)–GeO2 yielded crystals of composition La3AlGe5O16, La3GaGe5O16 and Ce3GaGe5O16, respectively. The syntheses were carried out at temperatures of 1023 K–1073 K under pressures of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3a260e09c7390bb4be9563821774ab7f
https://doi.org/10.1524/zkri.1998.213.4.223

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The crystal structure of gordaite NaZn4(SO4)(OH)6Cl · 6H2O

Autor: K. Friese, K.-H. Klaska, Jochen Schlüter, G. Adiwidjaja

Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 212:704-707

The new mineral gordaite [14] from the Sierra Gorda, Chile, has chemical composition NaZn4(SO4)(OH)6Cl · 6H2O and crystallizes trigonal with space group P[unk]. The lattice parameters are a = 8.3556(3) Å and c = 13.025(1) Å. The structure was dete

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3185450841a5420afe482b67f4bef202
https://doi.org/10.1524/zkri.1997.212.10.704

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