Provides information on the molecular mass of bromobenzene as an exercise in mass spectrometry and isotopes for general chemistry. Relevance of the exercise in understanding chemical concepts; Analysis on the composition of the ion; Discussion on molecular ions.Schildcrout...
3D-QSAR models of the imidazole compounds were developed from the conformer generated by QPLD, and the resulting models showed a good correlation between the predicted and experimental activity. The visualization of the 3D-QSAR model in the context of the compounds under study revealed the details ...
catalysts for the Heck reaction of styrene with 4-chlorobenzonitrile, bromobenzene and 4-bromobenzonitrile. The diphosphinoazine complexes competed well with the traditional catalysts; best turnover number was about 680 000 in the reaction of 4-bromobenzonitrile. The TON of the chloroarene was 729....
Structure of compound (5, MBCND) was deduced based on their elemental analyses and spectral data (IR, 1H NMR and mass spectra). Density Functional Theory (DFT) calculations at the B3LYP/6-311G (d,p) level of theory have been carried out to investigate the equilibrium geometry of the ...
1·4PF6 was characterized by 1H, 13C, 1H–1H COSY and NOE NMR spectroscopies (Supplementary Figures 1-4), all of which are in support of the existence of a pure highly symmetrical species in solution. Additional evidence for the formation of 1·4PF6 was obtained by high-resolution mass ...
2.1Mass and Heat Transfer The solubility of O2in organic solvents and water is generally very poor; therefore, the reaction rate for liquid phase aerobic oxidations in many cases is determined by mass transfer from the gas phase to the liquid phase [19]. The solubility of O2in the liquid ph...
Au-MxOy-TiO2-catalysts-for-CO-oxidation-Promotional-effect-of-main-group,-transition,-and-rare-earth-metal-oxide-additives_Journal-of-Molecular-Catalysis-A-Chemical 热度: molecular basis of retinol anti-ageing properties in naturally aged human skin in vivo.[2016][international journal of c.视黄醇...
Rapid Communications in Mass SpectrometryO. Yoon, W. G. Hwang, J. Choe und M. Kim. Internal Energy Content of n-Butylbenzene, Bromobenzene, Iodobenzene and Aniline Molecular Ions Generated by Two-photon Ionization at 266 nm. A Photodissociation Study. Rapid Commun. Mass Spectrom. 13 (1999)...
On the addition of 0.07 ml min鈥 1 isobutane the LP-ICP yielded mass spectra similar to those obtained by an electron impact source. However on the addition of more isobutane only the molecular ions (M+) for chlorobenzene, iodobenzene and dibromobenzene were observed. The detection limits for...
Preliminary crystallographic analysis of crystals of the respective benzene and bromobenzene adducts of hodgkinsine, an alkaloid from Hodgkinsonia frutescens F. Muell. (family Rubiaceae), together with mass spectral evidence suggested a formulation for hodgkinsine based on three N-methyltryptamine units. ...