Carbon Chains Essay

Results and Discussion Synthesis of Tin(IV) Porphyrin-Viologen Dyad: Tin(IV)porphyrin-viologen dyads 1 & 2 (scheme 1) used in this study was synthesized by a series of reactions. 1-(4-Carboxybenzyl)-1'-methyl-4,4'-bipyridinium hexaflurophosphate was prepared from the reaction between 1-Methyl-4,4'-bipyridinium iodide with 4-(bromomethyl)benzoic acid followed by ion exchange with NH4PF6. Reaction of 1-(4-Carboxybenzyl)-1'-methyl-4,4'-bipyridinium hexaflurophosphate with [Sn(OH)2TPP] (TPP =…

Asbestos has played a pivotal role in the construction, electrical and automotive industries for many decades due to its excellent thermal and abrasive properties (Brandt 2008). The term asbestos comes from ancient Greek word meaning "inextinguishable". According to Hart (1988), the use of asbestos dates back to prehistoric times where asbestos fibers were woven into a fabric and used as wicks in oil lamps. Asbestos is a naturally occurring mineral which is mined from the earth’s crust. It…

Because of the static configuration is a stable one, in the absence of streaming, the density of the upper fluid be lighter than the density of the lower one. The basic unperturbed flows have uniform velocities and . The two fluids are dielectrics and having the uniform dielectric constants and . The two fluids are influenced by an oblique electric field at the interface between the two media, according to: (2.1) where…

disclosed for separating low molecular weight alcohols, especially ethanol, from aqueous mixtures  The feed mixture contains alcohol and water with an extractive solvent comprising a substituted and unsubstituted phenol having 6 carbon atoms and alcohol containing 2 to 4 carbon atoms.  In the process the upper stream contains water with minimum amount of solvent that is 99.9% and the bottom stream contains alcohol with minimum amount of water.  The temperature of the process is between 180 to…

CHAPTER 2 LITERATURE REVIEW 2.1 Synthesis of Schiff base Method preparation for Schiff base ligand is a straight forward synthesis and easily modified using different amines and carbonyl compound. This could be one of the reasons that make Schiff base ligand popular in coordination chemistry research. Synthesis of Schiff base ligand commonly, taking place in alcohol through condensation reaction of amines and carbonyl compound. The acid/base catalysis or heating is employed in the synthesis…

δ13C is a comparison between the ratio of carbon 13 and carbon 12 of the object of interest compared to a standard. The cause of the -20‰ of δ13C in the maple syrup is no cause for concern. The reason -20‰ of δ13C may have been a cause for concern is because there are some sugarwoods that will adulterate their maple syrup with corn syrup or cane sugar. Corn syrup, as well as cane sugar, have a higher δ13C content than maple syrup. Typically corn syrup and cane sugar have between -9‰ to -12‰…

air cool without covered carbon powder were similar, but the one covered with carbon were increased the overall hardness than the one without. On the carbonized with water quench it showed the one covered with carbon can provided more hardness (twice or more) than the center and also the one without covered carbon. Introduction: Diffusion on a manufacturing industry is a process of increasing the harness of the metal itself usually is for the alloy that contain carbon, which usually a…

4.2.1. Material: Lead zirconate titanate (PZT) PZT is a short for lead zirconate titanate inorganic compound that has a chemical formula of Pb [ZrxTi1-x] O3 (0 ≤ x ≤ 1). PZT is made and composed of the two chemical elements lead and zirconium combined with the chemical compound titanate while formed under extremely high temperatures. The dielectric constant of PZT can range from 300 to 3850, depending upon orientation and doping. PZT possesses piezoelectric effect meaning that it changes shape…

Which idea below describes the atomic theory? A Atoms make up compounds. B Atoms can be rearranged to form new elements. C Most atoms are metals. D Everything is made up of tiny particles called atoms. ____ 3. Diamonds and graphite are both made of carbon atoms. Why do they have different properties?…

This thesis mainly focused on analysis approaches of twenty potential isomeric and designer drugs of 1-pentylacylindoles series of synthetic cannabinoids compounds associated mainly with naphthoylindoles and benzoylindoles structures, via using various analytical methods. These isomers and analogs represent potential designer modification of banned drugs and show the same elemental composition and yielding identical nominal, exact masses and general analytical properties which make the potential…