搜索结果: 1-15 共查到“化学 nitrogen”相关记录16条 . 查询时间(0.14 秒)
云南师范大学化学化工学院有机化学课件Chapter18 Other Nitrogen Compounds
云南师范大学化学化工学院 有机化学 课件 Chapter18 Other Nitrogen Compounds
2018/6/28
云南师范大学化学化工学院有机化学课件Chapter18 Other Nitrogen Compounds。
A liquid nitrogen immersion cryostat for optical measurements
liquid nitrogen immersion cryostat optical measurements
2016/5/23
A liquid nitrogen immersion cryostat has been developed for optical measurements. Liquid nitrogen in the sample chamber is kept free of bubbles and schlieren by the use of a cooling jacket of sacrific...
"The Effect of Magnesium Coordination on the 13C and 15N Magnetic Resonance Spectra of Chlorophyll a.The Relative Energies of Nitrogen np States as Deduced from a Complete Assignment of Chemical Shifts"
Magnesium Coordination 13C and 15N Magnetic Resonance Spectra Nitrogen np States Complete Assignment Chemical Shifts
2016/5/20
The 5 5 13Cand 4 I5Nnmr transitions in chlorophyll a and its magnesium-free derivative pheophytin a have been assigned. Emphasis is placed on the quaternary carbon atoms of the macrocycle which carry ...
Isotopically light carbon dioxide in nitrogen rich gases: the gas distribution pattern in the French Massif Central, the Eifel and the western Eger Rift
Eger Rift French Massif Central Eifel carbon dioxide gas fractionation isotope composition
2015/9/10
Based on characteristics of the distribution pattern of the western Eger Rift spring gases, a distribution pattern is
presented for the gases of the French Massif Central. The central parts of these ...
Sources and fate of nitrate in a groundwater-fed estuary elucidated using stable isotope ratios of nitrogen and oxygen
nitrate oxygen isotope
2014/10/16
We used d15N-nitrate (NO{
3 ) and d18O-NO{
3 to unravel the provenance and fate of NO{
3 in a groundwater-fed
estuary. A total of 13 monthly and two time series surveys were undertaken in the Werr...
Reactions of the solvent-stabilized compound [MoOCl2(THF)2] with aromatic nitrogen donor ligands: spectroscopic characterization and semiempirical AM1* calculations
Mo(VI) complexes oxo-imido complexes oxomolybdenum complexes oxygen atom
2010/4/8
Reaction of the solvent-stabilized dioxo-molybdenum(VI) compound [MoO2Cl2(THF)2] with PPh3 yielded the oxomolybdenum(IV) species [MoOCl2(THF)2] (1) by the removal of one oxygen atom as PPh3O. The comp...
Synthesis of Some New 4-oxo-4H-Chromene Derivatives Bearing Nitrogen Heterocyclic Systems as Antifungal Agents
Chromone nitrogen heterocycles antifungal activity
2010/4/16
Some new 4-oxo-4H-chromone derivatives bearing nitrogen heterocyclic systems were achieved by treatment of 3-[(4-aminophenylimino) methyl]-6-chloro-4-oxo-4H-chromene (2) with some aldehydes, cyclic ox...
Dinuclear Molybdenum Tetracarbonyl Complexes of Tetradentate Nitrogen Ligands and Intermolecular Hydrogen Bonding in the Crystal Structure of N,N´-bis-[1-(pyridin-2-yl)ethylidene]-ethane-1,2-diamine
Dinuclear intermolecular H-bonding molybdenum polyimines Schiff base tetracarbonyl
2010/4/8
Multidentate N-ligands (Schiff bases) were prepared by the condensation of 2-acetylpyridine or 2-benzoylpyridine, and 1,2-diaminoethane or 1,6-diaminohexane (2:1 ratio) in ethanol. These ligands were ...
The activation energy of the nitrogen acceptor in p-type ZnO film grown by plasma-assisted molecular beam epitaxy
A. Semiconductors B. Impurities in semiconductors C. Optical properties D. Hall effect measurement
2011/12/13
The nitrogen-doped, p-type ZnO film was grown by plasma-assisted molecular beam epitaxy (P-MBE) on c-plane sapphire (c-Al2O3) using radical NO as oxygen and nitrogen sources. The activation energy of ...
New Methods and Synthetic Applications of Asymmetric Nitrogen Transfer
N-alkoxycarbonyl N-carboxamidooxazinidine amination
2007/12/19
摘要 Structure/reactivity relationships of N-alkoxycarbonyl- and N-carboxamidooxaziridines are explored, and conditions are discovered for the efficient amination of sulfides and primary amines. Reactio...
Reverse Phase Gas Chromatography II-Polarity Terms of Some Nitrogen-Containing Surfactants and Simulated Hydrophobic Tails
Alkanolamides-Polyoxyethylenates-Polarit
2007/12/13
Reverse Phase Gas Chromatography II-Polarity Terms of Some Nitrogen-Containing Surfactants and Simulated Hydrophobic Tails。
期刊信息
篇名
Influence of RE Addition on the Synthesis Mechanism of Si3N4 from silica Reduction by Carbon in Nitrogen Atmosphere
语种
英文
撰写或编译
作者
LI Wenchao,Zhuang Youqing,Sun Guiru
第一作者单位
刊物名称
J.of Rare Ear...
期刊信息
篇名
Highly stereoselective synthesis of cyclopropanes based on the ferrocenoyl nitrogen ylide
语种
英文
撰写或编译
作者
梁永民,史 玲,王 鹏,刘雪原,刘为民
第一作者单位
刊物名称
Synthesis（Stuttgart）,
页面
2004, No14, 2342-234
出版日期
20...
Synthesis of Nitrogen-Containing Heterocycles from the Reaction of Amidrazones with a-Haloesters
Amidrazones a-haloesters 4,5-dihydro-1,2,4-triazin-6-one
2010/4/16
The reaction of amidrazones 1 with a-haloesters 2 formed 1,3,5-substituted 4,5-dihydro-1,2,4-triazin-6-ones (4a-z) rather than 1,2,4-triazin-5-one derivatives (5a-z). The microanalysis and spectral da...
铁、氮共掺杂二氧化钛粉末的制备及光催化活性（Preparation and Photocatalytic Activity of TiO2 Powder Codoped with Iron and Nitrogen）
二氧化钛 铁 氮共掺杂 亚甲基蓝 光催化
2010/8/18
Using TiCl4 as the titanium source, nanoparticles of TiO2 doped with nitrogen(N-TiO2) were synthesized by triethylamine. TiO2 powder codoped with iron and nitrogen(Fe/N-TiO2) were prepared by adsorpti...