WERNER’S THEORY OF COORDINATION COMPOUNDS

According to werner, the arrangement of 6 groups around the metal centre within the co-ordination sphere can lead to three possible geometries (For Q. 1 and Q. 2) : planar hexagon, trigonal prism and octahedral. For a particular geometry, if the groups (i.e. ligands) are arranged in different ways then the possibility of geometrical isomerism will arise. A complex [PtCl_(2)(NH_(3))_(4)]^(2+) in WERNER 'S universe has a total 3 stereo-isomers possible. If Werner was present, then, according to him, what can be the probable shape of the complex ?

Characteristics OF Catalyst, Theory OF Catalysis || Intermediate Compound Formation Theory || Absorption Theory || Shape Selective Catalysis ||Zeolites|| Enzyme Catalysis

Properties OF Coordination Compounds|| Magnetic moment OF Coordination Compounds|| Stability OF Coordination Compounds

Werner’s Coordination Theory||Crystal Field Theory||Splitting in Octahedral Field and Strength OF Ligands||Filling OF Electrons in Octahedral Field

Bonding in Co-ordination Compounds || Werner’s Co-ordination Theory Concept OF Primary Valency/Secondary Valency || Different test to Distinguish Compounds Formed by Werner

Werner Theory 2

Which of the following are not postulates of Werner? (P) In co-ordination compounds, metals show two types of linkage (valencies) primary and secondary (Q) The primary valencies are normally ionisable. These are satisfied by negative ions. (R) The secondary valency is equal to the co-ordination number and is fixed for a metal (S) The ions/groups bound by the primary and secondary linkages to the metal have characteristic spatial arrangements corresponding to different coordination numbers (T) Octahedral, Tetrahedral and Square planar geometrical shapes are more common in co-ordination compounds of transition metals

Naming OF Bridging Complexes || Werner's Coordination Theory