METALLATHIANEINS We have seen that heavy metals can replace essential metals in enzymes and destroy the enzymatic activity. In addition, by coordinating to sulfur-bearing amino acids in the protein chain…Continue readingMETALLOTHIONEINS (MTs)
PORPHYRINS Porphyrins are tetrapyrrole macrocycles with conjugated double bonds and various groups attached to the perimeter. The porphyrins can accept two hydrogen ions to form +2 diacids or donate two…Continue readingPORPHYRINS
ESSENTIAL CHEMICAL ELEMENTS Chemical elements essential to life forms can be broken down into four major categories : bulk elements (H/H+, C, N, O2– / O2– / O22–, P, S/S2–);…Continue readingESSENTIAL CHEMICAL ELEMENTS
WHAT IS BIOINORGANIC CHEMISTRY? Bioinorganic chemistry involves the study of metal species in biological systems. As an introduction to the basic inorganic chemistry needed for understanding bioinorganic topics, this chapter…Continue readingWhat is Bioinorganic Chemistry?
PHOTOELECTRIC EFFECT Emission of electrons from a metal surface when exposed to light radiations of appropriate wavelength is called photoelectric effect. The emitted electrons are called photoelectrons. Work function or…Continue readingPHOTOELECTRIC EFFECT
Isomerism in Coordination Compounds Compounds which have the same molecular formula, but differ in their properties due to the difference in structure are called as isomers. Isomerism is commonly considered…Continue readingIsomerism in Coordination Compounds
WERNER’S THEORY OF COORDINATION COMPOUNDS The geometries and properties of coordination compounds were first deduced by swiss chemist alfred werner in 1893, who was awarded the 1913 Noble prize in…Continue readingWERNER’S THEORY OF COORDINATION COMPOUNDS
THE LAW OF SYMMETRY It states that all crystals of a substance possess the same elements of symmetry. The three important elements of symmetry are:(i) plane of symmetry, (ii) axis…Continue readingTHE LAW OF SYMMETRY
