The Experts below are selected from a list of 172674 Experts worldwide ranked by ideXlab platform
Vahid Amani - One of the best experts on this subject based on the ideXlab platform.
-
one dimensional barium coordination polymer with 2 2 bipyridine 5 5 dicarboxylate ligand synthesis spectroscopic characterization thermal analyses and crystal structure
2015Co-Authors: Nasim Tadayon Pour, Aida Khalighi, Mohammad Yousefi, Vahid AmaniAbstract:[Ba(5,5´-dcbipy)(μ-H2O)2(H2O)2]n (1) complex was obtained from the reaction of one equivalent of 2,2'-bipyridine-5,5'-dicarboxylic acid (5,5´-dcbipy.H2) and one equivalent of ethylene diamine (en) with one equivalent of BaCl2.2H2O in water. This complex was characterized by elemental analysis, IR, UV-Vis, and luminescence spectroscopy and its structure was studied by the single-crystal X-Ray Diffraction Method. The thermal stability of 1 was studied by thermogravimetric and differential thermal analyses.
-
synthesis characterization and crystal structure determination of platinum iv complexes containing bipyridine derivatives and chloride pt 5 5 dmbipy cl4 and pt 6 mbipy cl4
2009Co-Authors: Vahid Amani, Nasser Safari, Hamid Reza Khavasi, Mehmet AkkurtAbstract:Abstract The complex [Pt(5,5′-dmbipy)Cl4] (1) (5,5′-dmbipy is 5,5′-dimethyl-2,2′-bipyridine) was prepared from the reaction of H2PtCl6·6H2O with 5,5′-dimethyl-2,2′-bipyridine in methanol. The same Method was employed to make [Pt(6-mbipy)Cl4] (2) (6-mbipy is 6-methyl-2,2′-bipyridine). Both complexes were characterized by elemental analysis, IR, UV–Vis, 1H NMR, 13C NMR and 195Pt NMR spectroscopy. Their solid state structures were determined by the X-Ray Diffraction Method.
Mehmet Akkurt - One of the best experts on this subject based on the ideXlab platform.
-
synthesis characterization and crystal structure determination of platinum iv complexes containing bipyridine derivatives and chloride pt 5 5 dmbipy cl4 and pt 6 mbipy cl4
2009Co-Authors: Vahid Amani, Nasser Safari, Hamid Reza Khavasi, Mehmet AkkurtAbstract:Abstract The complex [Pt(5,5′-dmbipy)Cl4] (1) (5,5′-dmbipy is 5,5′-dimethyl-2,2′-bipyridine) was prepared from the reaction of H2PtCl6·6H2O with 5,5′-dimethyl-2,2′-bipyridine in methanol. The same Method was employed to make [Pt(6-mbipy)Cl4] (2) (6-mbipy is 6-methyl-2,2′-bipyridine). Both complexes were characterized by elemental analysis, IR, UV–Vis, 1H NMR, 13C NMR and 195Pt NMR spectroscopy. Their solid state structures were determined by the X-Ray Diffraction Method.
Fabio Bertini - One of the best experts on this subject based on the ideXlab platform.
-
synthesis and x ray structure of cocl2 piprph2 2 a new highly active and stereospecific catalyst for 1 2 polymerization of conjugated dienes when used in association with mao
2005Co-Authors: Giovanni Ricci, Alessandra Forni, Aldo T Boglia, Tiziano Motta, Giulio Zannoni, Maurizio Canetti, Fabio BertiniAbstract:The new cobalt (II) phosphine complex CoCl2(PiPrPh2)2 was synthesized by reacting CoCl2 with isopropyldiphenylphosphine in ethyl alcohol as solvent. The molecular structure of the complex was determined by the X-Ray Diffraction Method. CoCl2(PiPrPh2)2 was then used in combination with methylaluminoxane for the polymerization of 1,3-butadiene: it was found to be highly active and stereospecific for the preparation of 1,2 syndiotactic polybutadiene. The same system was also able to polymerize substituted butadienes giving highly stereoregular 1,2 polymers from E-1,3-pentadiene, 1,3-hexadiene, and 3-methyl-1,3-pentadiene. Some of these polymers are completely new and were never prepared before.
Marcin Szala - One of the best experts on this subject based on the ideXlab platform.
-
identification and derivatization of selected cathinones by spectroscopic studies
2016Co-Authors: Jacek E Nycz, Grzegorz Malecki, Tadeusz Pazdziorek, Marcin SzalaAbstract:In this study we identified three novel hydrochloride salts of cathinones 2-(pyrrolidin-1-yl)-1-(5,6,7,8-tetrahydronaphthalen-2-yl)pentan-1-one (1a) (TH-PVP), 2-(methylamino)-1-(2-methylphenyl)-1-propanone (1b) (2-MMC) and 1-(4-chlorophenyl)-2-(methylamino)propan-1-one (1c) (4-CMC). Their properties have been examined through combinations of GC-MS, IR, NMR, electronic absorption spectroscopy and single crystal X-Ray Diffraction Method. NMR solution spectra showed readily diagnostic H-1 and C-13 signals from methyl, N-methyl and carbonyl groups. Additionally the use of thionation and amination reactions for identification of selected cathinones was presented.
Takeo Hondoh - One of the best experts on this subject based on the ideXlab platform.
-
complete determination of ice crystal orientation using laue x ray Diffraction Method
2011Co-Authors: Atsushi Miyamoto, Ilka Weikusat, Takeo HondohAbstract:Ice crystal orientation fabric data from ice cores contain important information concerning the internal structure and the flow behaviour of ice sheets. When ice cores are recovered from the Antarctic and Greenland ice sheets, crystal orientation measurements are performed immediately to obtain fundamental physical property information. In the past, we have measured the c-axis orientation of ice crystals by a manual optical Method using a universal stage. This Method is very time-consuming, involving tedious work in a cold laboratory. Recently, automated systems have been developed that enable measurement of c-axis orientation, grain size and other microstructures. However, in order to detect the full crystal orientation of an ice crystal, we also need information on its a-axis orientation. A variety of other crystal orientation measurement Methods have previously been discussed, but some shortcomings for ice-core studies cannot be neglected. We have developed a crystal-orientation analysing device using the Laue X-Ray Diffraction Method. As this device can measure the orientations of all crystal axes with high accuracy, it is possible to obtain new microstructure information on natural ice crystals. For the first time, we are able to quantify very low subgrain misorientation angles in polar ice-core samples, allowing us to investigate micro-deformation features of individual crystals. Here we discuss the analysis process, which is customized to measure standard ice thin sections, and show preliminary results.
-
instruments and Methods complete determination of ice crystal orientation using laue x ray Diffraction Method
2011Co-Authors: Atsushi Miyamoto, Ilka Weikusat, Takeo HondohAbstract:Ice crystal orientation fabric data from ice cores contain important information concerning the internal structure and the flow behaviour of ice sheets. When ice cores are recovered from the Antarctic and Greenland ice sheets, crystal orientation measurements are performed immediately to obtain fundamental physical property information. In the past, we have measured the c-axis orientation of ice crystals by a manual optical Method using a universal stage. This Method is very time-consuming, involving tedious work in a cold laboratory. Recently, automated systems have been developed that enable measurement of c-axis orientation, grain size and other microstructures. However, in order to detect the full crystal orientation of an ice crystal, we also need information on its a-axis orientation. A variety of other crystal orientation measurement Methods have previously been discussed, but some shortcomings for ice-core studies cannot be neglected. We have developed a crystal-orientation analysing device using the Laue X-Ray Diffraction Method. As this device can measure the orientations of all crystal axes with high accuracy, it is possible to obtain new microstructure information on natural ice crystals. For the first time, we are able to quantify very low subgrain misorientation angles in polar ice- core samples, allowing us to investigate micro-deformation features of individual crystals. Here we discuss the analysis process, which is customized to measure standard ice thin sections, and show preliminary results.
