Student Corner

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    IUPAC Nomenclature of Coordination Compounds
    (Institute of Chemistry Ceylon, 2019-01) Karunarathne,Mahesh.C
    Systematic naming of chemical compounds is of utmost importance due to the fact that nonsystematic trivial names, common names, industrial trade names, and other names create chaos within the scientific community.
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    Protecting Groups in Organic Synthesis
    (Institute of Chemistry Ceylon, 2019-01) Weerasinghe,Laksiri
    Creating a complex target molecule with a sequence of reactions, including intermediary re-functionalization with a correctly placed skeleton, is often a challenging task. One of the key issues in such endeavor is chemoselectivity. Protecting groups play an important role in multistep organic synthesis to improve the chemoselectivity in subsequent steps.
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    Theory behind Radiocarbon Dating
    (Institute of Chemistry Ceylon, 2019-01) Lamabadusuriya,M.R
    Radiocarbon dating is a method of finding the age of a fossile (a dead plant or an animal) or an ancient artifact containing carbon. This dating method is based on the amount of radioactive 14C isotope remaining in the sample.
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    Chirality of Molecules
    (Institute of Chemistry Ceylon, 2019-09) Gunaratna,Medha.J
    Chirality is the existence of different configurations (three dimensional arrangements) of a substance with an identical chemical formula. The word Chirality is derived from the Greek word chéri meaning hand.
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    The Transistor
    (Institute of Chemistry Ceylon, 2019-09) Jayaweera,Hiran. H. E
    Transistor the building block of the modern processor was invented by Physicists John Bardeen, Walter Brattain, and William Shockley in 1947 at Bell Laboratories, USA. Considering the importance of the invention, the inventors were awarded the Nobel Prize in Physics in 1956 .
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    Isomerism in Coordination Compounds
    (Institute of Chemistry Ceylon, 2020) Perera,K. Sarath D
    Isomers (compounds with the same chemical formula) can be broadly classified into (i) stereoisomers (e.g. geometrical and optical) with the same connectivity but having different spatial arrangements and (ii) structural isomers with different connections between atoms.
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    Opium Alkaloids
    (Institute of Chemistry Ceylon, 2020-01) Weerasiri,Kushan
    Alkaloids constitute a class of nitrogen containing organic compounds that possess significant pharmacological properties.
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    Valence Bond Theory
    (Institute of Chemistry Ceylon, 2020-01) Perera,K. Sarath D
    Metal centres of d-block form coordination compounds with ligands which can donate a pair of electrons.
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    Oxidative Addition Reactions
    (Institute of Chemistry Ceylon, 2020-05) Perera K.D.Sarath
    Coordinatively unsaturated metal centres (Mn+) (valence electron count, VEC<18) may undergo oxidative addition reactions to form saturated metal complexes by cleaving the X-Y bond of a molecule (e.g. H2 , O2 , Br2 , I2 , Cl2 , organic halides (RX), HX, RCO2 H, alkenes and alkynes with electron withdrawing groups).
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    Substitution Reactions
    (Institute of Chemistry Ceylon, 2020-05) Perera,K. Sarath D
    A good knowledge in coordination and organometallic chemistry is very useful to a student, who wish to understand chemical transformations taking place around in nature and industry
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    RT PCR
    (Institute of Chemistry Ceylon, 2020-05) De Zoysa Ariyananda,Lushanti Mihiri
    The whole world is engulfed with uncertainty, emptiness, lack of hope and pretty much one-third of the world is under some sort of lockdown due to the Corona Virus threat spreading across the world
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    Crystal Field Theory
    (Institute of Chemistry Ceylon, 2020-05) Perera,K. Sarath D
    Crystal Field Theory (CFT) supersedes valence bond theory as it provides a simple method to explain the electronic spectra and magnetism of transition metal complexes.
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    Metal Carbonyls
    (Institute of Chemistry Ceylon, 2020-09) Perera,K. Sarath D
    Carbon monoxide is a good π-acceptor and the M-C bond in metal carbonyls [M(CO)n ] has a significant π character. Thus, the M-C bond is strengthened and the carbon oxygen bond is weakened with the increase in back bonding.
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    Insertion and deinsertion reactions
    (Institute of Chemistry Ceylon, 2020-09) Perera,K Sarath D
    In an insertion reaction, Y gets transferred on to a ligand (AB). This can be considered as a migration reaction as shown below
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    Metal Hydrides
    (Institute of Chemistry Ceylon, 2021-04) Perera,K Sarath D
    We know that main group hydrides such as LiAlH4 and NaBH4 are the common reducing agents used by organic chemists to reduce aldehydes, ketones and carboxylic acids. Transition metal hydrides act as good catalysts for hydrogenation, isomerization, hydroformylation and hydrocyanation of olefins. The coordination modes of the hydride ligand are as follows.
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    Introduction to Radiochemistry
    (Institute of Chemistry Ceylon, 2021-04) Perera,K. Sarath D
    An atom consists of a very small (about 10–10 m in radius), dense and positively charged nucleus and negatively charged electrons. The nucleus consists of protons (p) and neutrons (n); these two particles are collectively known as nucleons
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    Hydrogenation of olefins
    (Institute of Chemistry Ceylon, 2021-04) Perera,K. Sarath D
    Hydrogenation of olefins is one of the simplest reactions, where two hydrogen atoms add across a carbon-carbon double bond to give an alkane.
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    Aromaticity and Reactions of Aromatic Molecules/Ions
    (Institute of Chemistry Ceylon, 2021-06) Perera,K. Sarath D
    Fully conjugated (FC) and unsaturated ring systems are known as aromatic compounds. Aromaticity is a chemical property that determines the stability of cyclic molecules. Basically, there are three structural features that determine the aromaticity of a compound.
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    Monsanto and Cativa processes of acetic acid synthesis
    (Institute of Chemistry Ceylon, 2021-06) Perera,K. Sarath D
    In 1960, chemists at BASF developed the carbonylation of methanol into acetic acid.
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    Mass Spectrometry
    (Institute of Chemistry Ceylon, 2021-06) Perera,K. Sarath D
    Mass spectrometry is an analytical technique used to obtain information on the structure and molecular weight/accurate mass of a given compound.