the organic chemistry of explosives
Tài liệu THE VOCABULARY AND CONCEPTS OF ORGANIC CHEMISTRY pptx
... governs the size of the orbital (wave function) and deter- mines the energy of the orbital. The value of n corresponds to the number of the shell in the Bohr atomic theory and the larger the n, the ... 2.11) and the dimer of AlBr 3 (Fig. 2.7b) involving a lone pair on each of the bridging bromine atoms are examples of the operation of the octet rule (for the explanation of the charges on the atoms, ... of the pairing of two electrons, one from each of the bonded atoms, and the electron density of the shared pair is at a maximum between the bonded atoms. In the molecular orbital treatment, the...
Ngày tải lên: 13/12/2013, 16:15
development of independent creativity for students of the universities of technology via teaching and studying organic chemistry.
Ngày tải lên: 25/07/2014, 14:39
Báo cáo y học: "Enhancement of the Click Chemistry for the Inverse Diels Alder Technology by Functionalization of Amide-Based Monomers"
... reaction by the solid phase peptide synthesis. (Figure 4) 9. Ligation of the pentamer I with the te- trazine-dicarboxylate 6: One µmol of the pentamer I 8 (Figure 3) and 5.5 µmol of the tetrazine ... which in turn separates the two monomers featuring the Reppe Anhydride 3 and the monomer with the pentenoic acid 2 in the center of the heptamer. The DAR inv based Click chemistry s potential ... 3. The synthesis of the tetrazine dicarbonic acid derivate was performed as described by [15]. The synthesis procedure of the corresponding dansyl de- rivative was carried out according to the...
Ngày tải lên: 25/10/2012, 11:00
The chemistry of nanostructured materials
... significant impact on the development of high silica zeolites. The Si/Al ratio in the framework is increased because of the low charge to volume ratios of organic molecules. In general, the crystallization ... from the above metalloporphyrin-based structures. The metal cation in the center of the porphyrin ring is also coordinated to pyridyl groups of other tpp complexes, allowing the creation of ... situ during the synthesis of metal -organic frameworks. 5.5 Metal -organic frameworks from chalcogenide clusters As shown above, the use of organic multidentate ligands to organize inorganic species...
Ngày tải lên: 23/04/2013, 20:25
Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge
Ngày tải lên: 05/09/2013, 08:40
Gián án Chapter 22 Chemistry of the Nonmetals
... some of the lattice sites ã SiO 2 becomes AlO 2 ã the negative charge is countered by the inclusion of a cation Albite = ẳ of Si replaced by Al; Na(AlO 2 )(SiO 2 ) 3 Anorthite = ẵ of Si ... form of carbon that is a component of soot used as rubber strengthener 7 Silicates ã the most abundant elements of the Earths crust are O and Si ã silicates are covalent atomic solids of ... coal in the absence of air forms coke carbon and ash ã heating wood in the absence of air forms charcoal activated carbon is charcoal used to adsorb other molecules ã soot is composed of hydrocarbons...
Ngày tải lên: 28/11/2013, 01:12
Fundamentals of organic chemistry
... Dimethyl ether 1.13 THE STRUCTURE OF ETHENE (ETHYLENE): sp 2 HYBRIDZATION Figure 1.19 The structure and bond angles of ethene. The plane of the atoms is perpendicular to the paper. The ... that said, the practical advise I can offer is twofold: 1. When studying for the tests, look over the old problem sets, do the problems from the back of the book, and utilize the website!! ... each other) ⇒ subtract each other ⇒ resulting wave is smaller than either individual wave. 7) Node: the value of wave function is zero ⇒ the greater the number of nodes, the greater the energy....
Ngày tải lên: 15/01/2014, 12:45
Tài liệu Characterization of the Polymorphic Behavior of an Organic Compound Using a Dynamic Thermal and X-ray Powder Diffraction Technique pptx
... a wavelength of 1.540600 Å. The X-ray data was collected using an MBraun curved PSD with a chamber depth of 1 cm. The focal radius of the system was 57 mm, and the 5 cm length of the PSD subtended ... glass transition combined with the onset of thermal degradation, or the melt of a minor quantity of crystalline material that recrystallized upon cooling from the melt. Figure 24. DSC of amorphous Form (sample ... A split was used to send a fraction of the evolved gases to a quadruple mass spectrometer for real time detection of the volatiles over the duration of the thermogravimetric analysis. Simultaneously,...
Ngày tải lên: 14/02/2014, 03:20
Tài liệu THE VAPRO PRESSURE OF ENVIRONMENTALLY SIGNIFICANT ORGANIC CHEMICALS: AREVIEW OF METHODS AND DATA AT AMBIENT TEPERATURE ppt
Ngày tải lên: 14/02/2014, 03:20
Tài liệu Investigation of Organic Chemicals Potentially Responsible for Mortality and Intersex in Fish of the North Fork of the Shenandoah River, Virginia, during Spring of 2007 ppt
... Laboratory 4 Friends of the North Fork of the Shenandoah River Prepared in cooperation with the Friends of the North Fork of the Shenandoah River Open-File Report 2008–1093 U.S. Department of the Interior U.S. ... not known if the trace levels of para-cresol and 17α-ethynylestradiol are the sole causes of the estrogenic response in these samples because of the large numbers of natural and synthetic polar ... unknown; however, the input of anthropogenic organic chemicals (AOCs) into the basin may be a factor. The U.S. Geological Survey in cooperation with the Friends of the North Fork of the Shenandoah...
Ngày tải lên: 14/02/2014, 08:20
Tài liệu Báo cáo Y học: Soluble silk-like organic matrix in the nacreous layer of the bivalve Pinctada maxima A new insight in the biomineralization field pptx
... Some important roles were ascribed to them as the control of nucleation, the growth and the inhibition of crystal forma- tion [8,73]. The other compounds of the nacre organic matrix, present in WSM, ... also called the ÔenvelopeÕ by the authors, are the aspartic acid- rich proteins. However, the surface molecules extracted in WSM correspond to the core of the organic matrix layer of the previous ... volume. The low molecular weight peak due to the use of EDTA, often mentioned in the literature [24,33], was not observed in the size-exclusion profiles of the EDTA-SM extract (Fig. 1B). The fractionation...
Ngày tải lên: 21/02/2014, 01:21
Tài liệu Báo cáo khoa học: Coordination chemistry of iron(III)±porphyrin±antibody complexes In¯uence on the peroxidase activity of the axial coordination of an imidazole on the iron atom ppt
... occurs in the case of 13G10±Fe(ToCPP) on the less hindered face of the porphyrin, close to the catalytic COOH residue, whereas in the case of 13G10±Fe(DoCPP) it can occur on the other face of the porphyrin. ... (Table 1). The bind- ing of the ®rst CN ± ligand to the iron was thus more easy in the hydrophobic binding pocket of the antibody than the binding of the second one, most probably because of the steric ... shown). This shows that the binding of the two cyanide ligands to the iron atom of 13G10±Fe(ToCPP) actually occurred inside the binding pocket of the antibody. The value of the dissoci- ation constant...
Ngày tải lên: 21/02/2014, 03:20
THE CHEMISTRY OF MILK pptx
... temperature, the iodine value is largely a measure of the oleic-acid content and thereby of the softness of the fat. The iodine value of butterfat normally varies between 24 and 46. The variations ... those of κ-casein are readily soluble. Due to the dominating localisation of κ-casein to the surface of the micelles, the solubility of calcium κ-caseinate prevails over the insolubility of the other ... formed. The protein is then precipi- tated from the solution. The pH at which this happens is called the isoelec- tric point of the protein. In the presence of an excess of hydrogen ions the molecules...
Ngày tải lên: 08/03/2014, 23:20
One dimensional organic nanostructures a novel approach based on the selective adsorption of organic molecules on silicon nanowires
... to the SiNWs. The faintness of the SiNWs, as compared to Fig. 1, is due to the presence of the molec- ular aggregates on top of the SiNWs which decreases the contrast between the SiNWs and the ... be- tween the Si dimers of the nanowires and the dicarbonyl groups of the molecules via a [4 + 2] cycloaddition, resulting in the formation of strong covalent bonds at the organic inorganic interface. ... a great deal of interest from the scientific community because of their potential for nanotechnology and the opportunity they provide to understand the fundamentals of the physics of low-dimensional...
Ngày tải lên: 16/03/2014, 15:35
Profile of the Organic Chemical Industry 2nd Edition pot
... Profile of the Water Transportation Industry EPA/310-R-97-004. Profile of the Metal Casting Industry EPA/310-R-97-005. Profile of the Pharmaceuticals Industry EPA/310-R-97-006. Profile of the ... Profile of the Organic Chemical Industry, 2 nd Edition* EPA/310-R-95-013. Profile of the Petroleum Refining Industry EPA/310-R-95-014. Profile of the Printing Industry EPA/310-R-02-002. Profile ... represent the majority of the production in the organic chemicals industry. Figure 1 presents the annual production rate in 1998 of the ten most-produced intermediate chemicals in the U.S. The value...
Ngày tải lên: 22/03/2014, 14:20
Process-Based Self-Assessment Tool for the Organic Chemical l Industry: EPA Office of Compliance Chemical Industry Branch pptx
... Bottoms Removal of "bottoms" and cleaning of the interior of tanks often requires steam, water and special detergents/solvents; the mixture of these and any residual contents of the tank will ... will usually minimize the environmental impact of all of these situations, at least in the immediate vicinity of the tank. Fire and fire suppressants are another source of potential environmental ... How often is the alkylation unit cleaned and how is the residual managed? 2. Can the amount of acid used for washing product be reduced thereby reducing the amount of spent acid? 3. Can the spent...
Ngày tải lên: 22/03/2014, 14:20
EVALUATING THE SUBSURFACE FATE OF ORGANIC CHEMICALS OF CONCERN USING THE SESOLL ENVIRONMENTAL FATE MODEL potx
Ngày tải lên: 22/03/2014, 14:20