Institute of Chemistry Ceylon Digital Repository

Browsing Student Corner by Issue Date

Browsing Student Corner by Issue Date

Sort by: Order: Results:

  • Karunarathne, Mahesh C. (Institute of Chemistry, 2019-01)
  • Weerasinghe, Laksiri (Institute of Chemistry, 2019-01)
  • Lamabadusuriya, M.R. (Institute of Chemistry, 2019-01)
  • 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.
  • 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 ...
  • 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 ...
  • 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 ...
  • 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.
  • 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 ...
  • 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 , ...
  • Perera, K Sarath D (Institute of Chemistry Ceylon, 2020-09)
    n an insertion reaction, Y gets transferred on to a ligand (AB).
  • 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.
  • 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 ...
  • 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); ...
  • 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 ...
  • 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.
  • 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 ...
  • 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 ...
  • Perera, K. Sarath D. (Institute of Chemistry, 2021-06)
  • Perera, K. Sarath D. (Institute of Chemistry Ceylon, 2021-09)
    Nuclear Magnetic Resonance spectroscopy is probably the most powerful tool available for structure determination of organic, inorganic and organometallic compounds. It is also used by chemists to study mechanisms, ...

Search DSpace


Advanced Search

Browse

My Account