Ograniczanie wyników
Czasopisma help
Lata help
Autorzy help
Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Znaleziono wyników: 60
first rewind previous Strona / 3 next fast forward last
Wyszukiwano:
w słowach kluczowych:  X-ray analysis
help Sortuj według:

help Ogranicz wyniki do:
1
100%
Polish Journal of Chemistry
2007 Vol. 81, nr 11 1861-1868
EN (+)-Thiomicamine, an industrial waste product, has been transformed into (–)-(4S,5S)- 4-hydroxymethyl-5-p-methylthiophenylxazolidin-2-one, a sulfur analog of isocytoxazone, the regioisomer of the potent cytokine modulator, (–)-cytoxazone.
2
100%
Polish Journal of Chemistry
EN The interactions between the components in the Y2S3-PbS-SnS2 system at 770 K were determined using X-ray powder diffraction. The existence of the Y2PbS4 (unknown structure) compound in the Y2S3-PbS section and the PbSnS3 (PbSnS3 structure type, space group Pnma) compound in the PbS-SnS2 section was [...]
3
100%
Polish Journal of Chemistry
EN Phase equilibria in the Ho2X3-Cu2X-ZX2 (Z = Si, Ge; X = S, Se) systems at 870 K were determined using X-ray single crystal and powder diffraction. The existence of the HoCuS2, HoCu5 X4 compounds and the Ho(2+x)/3Cu2-xS2 (0 _ x _ 0.61), Ho(2+x)/3Cu2-xSe2 (0 _ x _ 1) solid solutionswas confirmed in th[...]
4
100%
Polish Journal of Chemistry
EN The Y2Se3-Cu2Se-GeSe2 system was investigated using X-ray powder diffraction. The existence of the Y(2+x)/3Cu2-xSe2 (0 _ x _ 1) solid solution (Er2/3Cu2S2 structure type, space group P3) was confirmed in the Y2Se3-Cu2Se section. No compounds were found in the Y2Se3-GeSe2 section. The formation of th[...]
5
100%
Polish Journal of Chemistry
EN The interactions between the components in theY2X3-Cu2X-SnX2 (X = S, Se) systems at 870 K were determined using X-ray powder diffraction. The existence of the compound YCuS2 and the Y(2+x)/3Cu2-xS2 (0 x 0.52) solid solution was confirmed in the Y2S3-Cu2S section. The existence of the solid solutio[...]
6
100%
Polish Journal of Chemistry
EN The binary system YPO4 -- Ba3(PO4)2 has been examined by differential thermal analysis, X-ray and microscopy in reflected light. Its phase diagram has been proposed. The initial orthophosphates react at a 1:1 and 2:1 molar ratio to give two intermediate compounds: Ba3Y(PO4)3 and Ba3Y2(PO4)4. It has [...]
7
100%
Polish Journal of Chemistry
EN A polymeric manganese(II) complex of sarcosine [Mn(sar)2(H2O)2]Cl2 (where sar = sarcosine) has been prepared and characterized by elemental, spectroscopic, thermal, magnetic and X-ray investigations. X-ray crystallographic study shows that the octahedral- coordinated manganese(II) ion is situated in[...]
8
100%
Polish Journal of Chemistry
EN The reaction of cholesteryl acetate with ozone in the presence of amines has been studied. Besides the expected cleavage products, B-seco-ketoaldehyde and its aldol condensation product, 5-hydroxy-6-formyl-B-nor-5_-cholestane derivative, the abnormal product, 3_-acetoxy-A-nor-3(5_6_)abeo-6_(H)-chole[...]
9
100%
Polish Journal of Chemistry
1999 vol. 73 nr 2 367-376
EN The molecular structure of 8 and 9 has been determined by a single-crystal X-ray analysis. Both chiral esters are derivatives of the non-steroidal anti-inflammatory drug diclofenac (1), and have physicochemical properties of potential prodrug. Comparison of the geometry of 2-[(2,6-dichlorophenyl)am[...]
10
100%
Journal of Machine Engineering
EN The aim of the presented study is to establish a methodology elaboration, giving a possibility to predict properties of coatings reached in CVD process on tool materials, based on fractal quantities describing their surface. Coatings' topography and its structure which has an impact on a shape of an[...]
11
100%
Polish Journal of Chemistry
2005 Vol. 79 / nr 8 1315-1326
EN Interactions between the components in theY2Se3-Cu2Se-SnSe andY2Se3-Cu2Se-PbSe systems at 870 K were determined using X-ray powder diffraction. The existence of the compound with composition YCuSe2-Y2/3Cu2Se2 (Er2/3Cu2S2 structure type, space group P3, a = 0.40660-0.40370(1) nm, c = 0.64640-0.65906([...]
12
100%
Archives of Metallurgy and Materials
EN Crystal structure and phase composition of stainless steel substrates (AISI 304 type) was studied and it was found that they adopted the cubic symmetry. The calculated elementary cell parameter for the mayor Fe-Ni phase (weight fraction 99%) was a = 3.593 Å, whereas the mean grain size was = 293[...]
13
88%
Polish Journal of Chemistry
EN The interactions between components in Zr-Cu-In ternary system at 870 K have been studied by X-ray and microstructure analyses. One earlier known (ZrCu2In with MnCu2Al-type) and four inknown ternary compounds have been found. Crystal structure of all new compounds are determined: ZrCu5-xInx (x=0.3-1[...]
14
88%
Polish Journal of Chemistry
1998 Vol. 72, nr 8 1886-1889
EN The interactions between the components in the ternary Zr-Ag-In system were studied. An isothermal section at 870 K was established by X-ray analysis. Two unknown ternary compounds have been found: ZrAg-0.4In-2.6-AuCu3 structure type (space group Pm3m, a=4.3644(4) A and Zr5AgIn3-Hf5CuSn3 structure t[...]
15
88%
Polish Journal of Chemistry
EN 4,6,8-Triaryl-2-oxa-4,6,8-triazabicyclo[3.3.0]octanes (4) and 6,8-diaryl-2,4-dioxa-6,8- diazabicyclo[3.3.0]octanes (5) were synthesized by condensation of arylamines with glyoxal and formaldehyde in CH3CN. Change of the reaction solvent to CH3OH leads to dimethoxy imidazolidine (7). Depending on the[...]
16
88%
Polish Journal of Chemistry
2008 Vol. 82, nr 5 1001-1014
EN Phase equilibria in the Sc2Se3-Cu2Se-SnSe2 and Sc2Se3-Cu2Se-PbSe sys tems at 870 K were determined using X-ray powder diffraction. The crystal structure of the ScCuSe2 (space group C2/m, a = 1.2762(3) nm, b = 0.7752(1) nm, c = 0.9260(1) nm, beta =133.32(2)°, R1 = 0.0396, wR2 = 0.1141) of the Sc2Se3-[...]
17
75%
Rudy i Metale Nieżelazne
2007 R. 52, nr 3 135-139
PL Zbadano możliwość produkcji tlenku miedzi metodą elektrochemiczną. Tlenki wytwarzano stosując metodę galwanostatyczną z użyciem blach z czystej miedzi, które wyprodukowano na Wydziale Elektrolizy w Bor. Proces tworzenia tlenków miedzi przeprowadzono w elektrolicie siarczanu sodu. Badano wpływ różnyc[...]
EN The aim of this work was that starting from theoretical discussion based on use of the Purbe's [1] diagrams, investigated the possibility of electrochemical copper oxide production. Oxide types were formed by the use of galvanostatic method on plates of pure copper. The plates of pure copper were ob[...]
18
75%
Polish Journal of Chemistry
2001 Vol. 75, nr 9 1209-1217
EN The crystal and molecular structure of Co(II) maleate trihydrate, Co(C4H2O4)_3H2O, was determined by direct method and Fourier techniques. The structure was refined by full-matrix least-squares methods to a weighted R factor of 0.0263, based on independent reflections. The compound is a three-dimens[...]
19
75%
Polish Journal of Chemistry
2004 Vol. 78 / nr 9 1785-1793
EN Five new macrocyclic compounds of the triazacoronand type have been synthesized, starting from dimethyl iminoacetate and appropriate _,_-diamines, in methanol as a solvent. Their complexing properties were investigated using the voltammetric method.
20
75%
Polish Journal of Chemistry
2003 Vol. 77 / nr 12 1723-1730
EN Reactions of Cs[Bi(SCN)4] with solutions of sodium formate, acetate, propionate and valerate were examined. Chemical, XRD and IR analyses were carried out. Two bismuth compounds are formed in the solid phase: caesium sodium hexathiocyanatobismuthate( III) Cs2Na[Bi(SCN)6] and BiX3 or BiOX (X - organi[...]
first rewind previous Strona / 3 next fast forward last