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Browsing Student Corner by Issue Date

Browsing Student Corner by Issue Date

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  • IUPAC Nomenclature of Cordination Compounds 
    Karunarathne, Mahesh C. (Institute of Chemistry, 2019-01)
  • Protecting Groups in Organic Synthesis 
    Weerasinghe, Laksiri (Institute of Chemistry, 2019-01)
  • Theory behind Radiocarbon Dating 
    Lamabadusuriya, M.R. (Institute of Chemistry, 2019-01)
  • Chirality of Molecules 
    Gunaratna, Medha .J (Institute of Chemistry Ceylon, 2019-09)
    Chirality is the existence of different configurations (three dimensional arrangements) of a substance with an identical chemical formula.
  • Opium Alkaloids 
    Weerasiri, Kushan (Institute of Chemistry, 2020-01)
    Alkaloids constitute a class of nitrogen containing organic compounds that possess significant pharmacological properties. They occur mainly in plants and to a lesser extent in microorganisms and animals. The name ...
  • Isomerism in Coordination Compounds 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-01)
    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 ...
  • Valence Bond Theory 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-01)
    Metal centres of d-block form coordination compounds with ligands which can donate a pair of electrons. These ligands are known as sigma donors or Lewis bases. Some ligands that consist of suitable vacant orbitals ...
  • Oxidative Addition Reactions 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-05)
    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 , ...
  • Substitution Reactions 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-05)
    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. It also helps to design synthetic ...
  • Crystal Field Theory 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-05)
    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.
  • Reductive Elimination Reactions 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-09)
    Reductive elimination (R.E.) is the opposite or the reverse of oxidative addition (O.A.), in which X-Y oxidatively adds on to Ln Mn+ to give Ln (X)(Y)M(n+2)+. LnM Y (n+2)+ X R.E. O.A. LnM n+ + X Y X and Y ...
  • Insertion and deinsertion reactions 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2020-09)
    n an insertion reaction, Y gets transferred on to a ligand (AB).
  • Metal Carbonyls 
    Perera, K. Sarath. D. (Institute of Chemistry, 2020-09)
    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.
  • Introduction to Radiochemistry 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2021-04)
    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); ...
  • Metal Hydrides 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2021-04)
    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 ...
  • Hydrogenation of olefins 
    Perera, K. Sarath. D. (Institute of Chemistry Ceylon, 2021-04)
    Hydrogenation of olefins is one of the simplest reactions, where two hydrogen atoms add across a carbon-carbon double bond to give an alkane.
  • Mass Spectrometry 
    Perera, K. Sarath. D. (Institute of Chemistry, 2021-06)
    Mass spectrometry is an analytical technique used to obtain information on the structure and molecular weight/accurate mass of a given compound. The main components of the mass spectrometer are the ion source, mass ...
  • Aromaticity and Reactions of Aromatic Molecules/Ions 
    Perera, K. Sarath. D. (Institute of Chemistry, 2021-06)
  • Monsanto and Cativa processes of acetic acid synthesis 
    Perera, K. Sarath. D. (Institute of Chemistry, 2021-06)
    In 1960, chemists at BASF developed the carbonylation of methanol into acetic acid. CH3 OH + CO CH3 COOH Monsanto process Monsanto Company introduced a new catalytic system in 1966. It is now known as the Monsanto ...
  • New definitions of SI Units and Physical Chemistry 
    Ratnaweera, Chinthaka Nadun (Institute of Chemistry Ceylon, 2021-09)
    Let’s begin with something everyone knows, SI units! Everyone of us applies them, but do you know the concept behind its definitions? Very recently definitions of SI units were changed and they are now defined by ...

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