Synthesis and reactivity studies of cyclopentadienyl derivatives of ruthenium iridium and osmium iridium mixed metal clusters 1
Synthesis and reactivity studies of cyclopentadienyl derivatives of ruthenium iridium and osmium iridium mixed metal clusters 1
... bridging one face of the cluster (Figure 1. 1) Ir Ir Rh Ir Ir Rh Rh Rh Figure 1. 1 Comparison of tetranuclear clusters of Ir4(CO )12 and Rh4(CO )12 The low solubility of Ir4(CO )12 and Rh4(CO )12 in organic ... to ligands and substrates As the focus of the research is on the synthesis and reactivity of mixed metal carbonyl clusters, a short review of some of the ligands like CO, hydrides, and cyclopentadienyls ... cluster anions and mono- or di-nuclear metal cations Clegg and coworkers have reported the synthesis of penta and hexanuclear mixed- metal clusters Os4Rh(μ-H2)(CO )13 and Os4Rh2(μ-H)2(CO )11 (η5-Cp*)2...
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Synthesis and reactivity studies of cyclopentadienyl derivatives of ruthenium iridium and osmium iridium mixed metal clusters 5
... C6H5), 1 .59 (s, 15H, 5. 05s 25 1974sh, 1948w Cp*), -13. 95 (dd, 1H, 2JP-H = 11 .55 Hz; JHH = 3.3 Hz, OsHOs), -16.87 (d, 1H, JHH = 3.3 Hz, IrHOs) 2060vs, 2005sh, 1991vs, 7.83-7.76 (m, 15H, C6H5), ... structure and refinement data are given in Tables 5. 5 and 5. 6 193 Table 5. 2 Experimental conditions used for the synthesis of compounds 23-26 Products and isolated yields Amount of Amount of PPh3Se ... 1371.9 658 1377. 958 51 29 .50 29.70 2.20 2. 25 1464.80 14 65. 35 - - - - 151 4.8414 151 4.84 252 2024vs, 2008m, 2000m, = 3.3 Hz, OsHOs), -16.90 (d, 1H, 2JHH 1989s, 1967w, 1 950 m = 3.3 Hz, IrHOs) 2 057 s, 2038vs,...
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Synthesis and reactivity studies of cyclopentadienyl derivatives of ruthenium iridium and osmium iridium mixed metal clusters 2
... Os(3) 2. 7644(4) 2. 9148(3) 2. 9061(4) 2. 7077 (2) Ir(1)- Os(4)/(3A) 2. 7 326 (3) 2. 9148(3) 2. 78 62( 16) 2. 76 52( 6) 2. 924 6(3) Os (2) - Os(3) 2. 9656(4) 2. 8013(4) Ru (2) -Ru(4)/(3A) 2. 8990(17) 2. 76 52( 6) 2. 8765(3) ... CpRhOs3(μ-H )2( CO)10 20 83m, 20 63vs, 20 42vs, 20 10vs, 20 00s(sh), 1982m, 1972m, 1819m Cp*RhOs3(μ-H )2( CO)10 20 84m, 20 64s, 20 41s, 20 02s, 1969w, 1962w, 1792m 41 Figure 2. 6 ORTEP diagram of Cp*IrOs3(μ-H )2( CO)10, ... Cp*IrOs3(μ-H )2( CO)10 (3c) 2. 7789(4) 2. 7644(4), 2. 7 326 (3) Cp*RhOs3(μ-H )2( CO)10 2. 769(1) 2. 769(1), 2. 734(1) CpIrOs3(μ-H )2( CO)10 2. 798(1) 2. 749(1), 2. 740(1) CpRhOs3(μ-H )2( CO)10 2. 736 (2) 2. 730(1), 2. 729 (1)...
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Synthesis and reactivity studies of cyclopentadienyl derivatives of ruthenium iridium and osmium iridium mixed metal clusters 3
... 15c1 133 0.1 132 8 .3 1 232 .3 1252.2 low yield m/z calculated 1 232 .7 2.00 MS 1252.2 15a2 29.84 30 .18 1.90 1.87 133 0 .3 132 8 .3 15b2 24 .37 23. 88 2.04 1.81 1 231 .9 1 232 .3 1252.2 1252.2 135 4.6 135 4.4 low ... 10a to 11b are presented in Tables 3. 11 -3. 13 107 Table 3. 5 Summary of the reactions of 3a with alkynes Amount of 3a 25.5 mg 0. 03 mmol Me3SiC≡CSiMe3 Et3SiC≡CSiEt3 drops 0.02 ml 0.10 mmol 0.04 ml ... 37 .32 37 .59 2 .36 2.04 1060.8 1060.9 10b 31 .09 31 .25 2.59 2.51 964.8 964.9 10c 31 .87 32 .33 2.69 1.98 980.9 978.9 10d 29 .36 29.54 2.55 2.44 979.5 980.9 10e 32 .18 31 .70 3. 05 3. 16 10 23. 6 10 23. 0 987.7920...
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Synthesis and reactivity studies of cyclopentadienyl derivatives of ruthenium iridium and osmium iridium mixed metal clusters 4
... a combination of two effects: The different covalent radii of iridium and osmium [metal- metal bond covalent radius of Ir = 1. 34 Å as in Ir4(CO)12 and Os = 1 .41 Å as in Os4(CO) 14] A component ... omitted for clarity Ir(1)-Os (4) = 2.7 140 (4) Å; Ir(1)-Os(2) = 2.78 04( 4) Å; Ir(1)-Os(3) = 2.7917 (4) Å; Os(2)-Os (4) = 2.89 24( 4) Å; Os(2)-Os(3) = 2.9578 (4) Å; Os(3)-Os (4) = 2.7860 (4) Å; Ir(1)-C(11) = 1.899(7) ... Table 4. 4 The spectroscopic and elemental analysis data for the products are given in Tables 4. 5 - 4. 7 Crystal structure and refinement data are given in Tables 4. 8 and 4. 9 160 Table 4. 4 Summary of...
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Synthetic, structural and reactivity studies of indenyl ruthenium complexes
... understanding of the effect of co-ligands in Ru complexes on the ease of ring slippage of the indenyl ligand, on the catalytic activity of [(Ind)Ru] complexes and the redox potentials of the ... metal complexes, but are common in complexes of group 10 25 Chapter Reactivity studies of [(Ind)Ru] complexes with P-, N- and S-containing ligands Table 2.1 Common coordination modes of dppf and ... groups for studies on the effects of steric and electronic environment on the chemical 26a and catalytic 27 reactivity of the complex Owing to the chemical uniqueness of the indenyl ligand as discussed...
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Báo cáo toán học: "Antioxidant, antimicrobial, and theoretical studies of the thiosemicarbazone derivative Schiff base 2-(2-imino-1-methylimidazolidin-4-ylidene)hydrazinecarbothioamide (IMHC)" potx
... Antioxidant, antimicrobial, and theoretical studies of the thiosemicarbazone derivative Schiff base 2-(2-imino-1-methylimidazolidin-4- ylidene)hydrazinecarbothioamide ... across the C=N bond The existence of the thione form predominantly in the solid state is demonstrated by the presence of two absorption bands at 1273.7 and 3421 cm−1 belonging to the C=S and NH ... Optimized 3D structure of the IMHC Figure The effect of test organism toward synthesized compound Figure The effect of tested fungi toward synthesized compound Figure The effect of synthesized compound...
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SYNTHESIZE AND INVESTIGATE THE CATALYTIC ACTIVITY OF THREE-WAY CATALYSTS BASED ON MIXED METAL OXIDES FOR THE TREATMENT OF EXHAUST GASES FROM INTERNAL COMBUSTION ENGINE
... The Tien Synthesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine CONTENT OF THESIS ... Nguyen The Tien 18 Synthesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine of three-way ... Nguyen The Tien Synthesize and investigate the catalytic activity of three-way catalysts based on mixed metal oxides for the treatment of exhaust gases from internal combustion engine LIST OF TABLES...
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Tài liệu Báo cáo khoa học: Enzymatic and electron paramagnetic resonance studies of anabolic pyruvate synthesis by pyruvate: ferredoxin oxidoreductase from Hydrogenobacter thermophilus doc
... (1996) Molecular and phylogenetic characterization of pyruvate and 2-ketoisovalerate ferredoxin oxidoreductases from Pyrococcus furiosus and pyruvate ferredoxin oxidoreductase from Thermotoga ... 505 Pyruvate synthesis by pyruvate oxidoreductase T Ikeda et al Discussion In the present study, we demonstrate that H thermophilus POR catalyzes pyruvate synthesis from acetylCoA and CO2, by ... Igarashi Y (1997) Carboxylation reactions of pyruvate: ferredoxin oxidoreductase and 2-oxoglutarate: ferredoxin oxidoreductase from Hydrogenobacter thermophilus TK-6 Biosci Biotechnol Biochem...
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Báo cáo khoa học: 15 N-Labelled proteins by cell-free protein synthesis Strategies for high-throughput NMR studies of proteins and protein–ligand complexes doc
... information, the protein ligand interaction can be probed by [15N]-HSQC FEBS Journal 273 (2006) 4154 – 4159 ª 2006 The Authors Journal compilation ª 2006 FEBS 4157 15 N-labelled proteins by cell-free ... accelerated studies of proteins by NMR spectroscopy by assigning residue type information to every amide cross-peak observed in [15N]-HSQC spectra We anticipate that high yield cell-free protein synthesis ... preparation of five samples leads to the assignment of every [15N]-HSQC cross-peak to one of FEBS Journal 273 (2006) 4154 – 4159 ª 2006 The Authors Journal compilation ª 2006 FEBS 4155 15 N-labelled proteins...
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Báo cáo hóa học: "Synthesis and Spectral Studies of CdTe–Dendrimer Conjugates" docx
... method of functionalizing QDs is simple and can avoid complicated synthesis and characterization of the intermediate products of QDs, when reactions are performed on the QD surfaces A number of reports ... microlitres (10–50 lL) of these solutions were added to the different sets of mL solution of CdTe QDs In a typical synthesis of CdTe–Dendrimer conjugate, mL aqueous solution of CdTe NPs (5 10-6 ... nm) determined from the correlation of particle size and optical band gap Further, average size and size distribution of CdTe QDs obtained from UV spectra and TEM image were also supported by...
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Synthesis and Evaluation of Pyrazine Derivatives with Herbicidal Activity
... copy and paste the following: Martin Doležal and Katarína Kráľova (2011) Synthesis and Evaluation of Pyrazine Derivatives with Herbicidal Activity, Herbicides, Theory and Applications, Prof ... individual parts of photosynthetic apparatus The site of action of PET inhibitors can be www.intechopen.com Synthesis and Evaluation of Pyrazine Derivatives with Herbicidal Activity 591 more ... exception of compounds 14 and 15 (R2 = 5-Br-2-OH) it can be assumed, that the introduction of lipophilic www.intechopen.com 593 Synthesis and Evaluation of Pyrazine Derivatives with Herbicidal Activity...
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