Center of inversion, symmetry element and symmetry operation | By AJIT KANSHIDE BHARATIYA
Автор: Ajit Kanshide Bharatiya
Загружено: 2020-10-28
Просмотров: 962
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Center of inversion
It is a point at the center of molecule in such a way that, if we draw a line from any one atom upto center of inversion and if we extend it to same extent we will meet other atom of the same element. If it is the arrangement for any part of the molecule then, there exists center of symmetry.
It s a point at the center of molecule. It may be in space or in an atom.
Operation – inversion
Representation – i
For element I only one unique operation is possible viz. i1 . But conventionally we represent it as ‘i’
Operation S21 is equivalent to i. Conventionally we represent i (means, we do not represent S2 element or related operations, as was a case for C1)
status of center of symmetry for vaious molecules
H2O
NH3
BF3
Trans – 1,2 – dichloro ethylene
H2
HCl
Benzene
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