Essays on Carbonyl

Introduction:

Nanobiotechnology serves as an imperative technique in the development of clean, nontoxic, and eco-friendly procedures for the synthesis and congregation of metal NPs having the intrinsic ability to reduce metals by specific metabolic pathways. Silver nanoparticles are particularly interesting nanoscale systems due to the ease with which they can be synthesised and modified chemically. Synthesis of silver nanoparticles has been widely researched due to their interesting size and shape-dependent properties [26]. These novel properties can be tailored by controlling their size, shape, composition, structure and crystallinity. Due to their size features and advantages over available anti-microbial properties, chemical imaging ...

Introduction

Reduction reactions are very important in chemistry as they are effective processes for synthesizing new compounds from existing ones. In organic chemistry, a compound is said to be reduced if it acquires new hydrogen. There are diverse reagents for carrying our reduction reactions. Two of these are sodium borohydride (NaBH4) and lithium aluminum hydride (LiAlH4) - the latter is a more powerful reducing agent compared to the former. In this experiment, NaBH4 was used to reduce p-Nitrobenzaldehyde to form p-Nitrobenzyl alcohol. NaBH4was used over LiAlH4 in this experiment, because LiAlH4 would also reduce the nitro group of the aldehyde.

Experimental:

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Introduction

There are environmental chemical processes which require light to react. These processes are called photochemical reactions. Photochemical reaction is commonly initiated due to the absorption of solar energy or light. When molecules absorb energy in the form of light, the atoms are converted in a transient excited state (Larson & Weber, 1994). This transition state or excited has completely different physical and chemical properties with the initial state of the molecule. The excited states also have more tendencies to react since they are considered stronger acids and stronger reductants that the initial state of the molecule. The excited state of ...

The aim of the experiment was to identify the functional group of the two unknown organic compounds.

Method

Step 1: Test for acidity and basicity of the unknown by a universal indicator Step 2: Test for the capacity of the unknown to be oxidized by KMnO4 Step 3: Test for the capacity of the unknown to be reduced by a Tollen reagent Step 4: Test for the presence of a carbonyl group in the unknown using 2, 4-DNP Step 5: Test for the presence of an alcohol group in ...

Abstract

The purpose of this experiment was to characterize aldehydes and ketones using Tollen’s test and Iodoform test. It also aims to identify an unknown substance as well as determine whether glucose is an aldehyde or a ketone using the same tests. In order to achive these purposes, four test tubes where prepared for each type of test. For Tollen’s test, each of the tubes contained 1 drop of the analyte to which 1mL of the Tollen’s reagent was added. For the Idoform test, 4 drops of each substance was used, to which 2 mL of sodium hydroxide ( ...

EVALUATION OF “Ru(0) AND Ru(II) NITROSYL PINCER COMPLEXES: STRUCTURE, REACTIVITY, AND CATALYTIC ACTIVITY,” BY FOGLER ET. AL. 1) Characterization of the compound Complex 8 which is described as a Ruthenium complex with a bent nitrosyl ligand was characterized using three analytical techniques: Hydrogen NMR (1{H} NMR), X-ray Diffraction (DFT), and Infrared Spectroscopy (IR). The 1H NMR was used to verify the complex which gave a singlet signal at 56.6ppm, and its phosphine methylene ligand gave a signal at 3.27 ppm, these signals not only verify the presence of the types of hydrogen in the complex but also its ...

Introduction

One of the classes of chemical complexes whose coordination chemistry has generated a lot of interest is the bidentate phosphines. This can be attributed to the fact that this class of ligands facilitates the combination of phosphorus atoms that have strong metal bonds with atoms from donor groups that are more labile in nature. Examples include Nitrogen atom from the aminophosphines donor group or an Oxygen atom from etherphosphines. This is unlike hard donors that are weak and basic like MeOH and H2O that do not have good binding with transitional metals including Rhenium. Due to this fact, complexes formed from ...

Lab Report on Aldehydes and Ketones Experiment

Lab Report on Aldehydes and Ketones Experiment

The current experiment aimed at learning properties of some of the common aldehydes and ketones, as well as, the chemical tests used to distinguish the different classes. Both aldehydes and ketones have the same functional group known as carbonyl group C=O. In the aldehyde compounds, the carbonyl group is located at the end the structure with a general structure shown below (McNaught & Wilkinson, 1997). The carbonyl carbon is, therefore, the first carbon of the carbon chain. On the other hand, the carbonyl group in ketones is located anywhere on the carbon ...