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-2 votes
0 answers
40 views

Are all helicenes optically active? Aren't they having a plane of symmetry? [closed]

Are all helicenes optically active? Aren't they having a plane of symmetry or centre of symmetry? Please give a detailed explanation
Avroop's user avatar
  • 7
0 votes
0 answers
128 views

When does the angle between the planes in tetrahedral molecule with central atom deviate from 90°?

Consider an atom X bonded to four other atoms A, B, C, D in a tetrahedral fashion with sp³ hybridisation. If A, B, C, D are the same, every bond angle is 109.47°, and the angle between the planes ...
Ritil's user avatar
  • 340
0 votes
0 answers
524 views

Are centre of symmetry(COS) and alternate axis of symmetry(AAOS) dependent on each other?

COS=Centre of symmetery AAOS=Alternate axis of symmetry Lets suppose a molecule has a COS. Does it need to have AAOS? What about the converse? If a molecule has AAOS does it necessarily have a COS? ...
PRITIPRIYA DASBEHERA's user avatar
1 vote
1 answer
2k views

Conditions for molecular dissymmetry

In my textbook, under the topic "Asymmetric and Dissymmetric Compounds", the following statement is given: A molecule which does not possess plane of symmetry, centre of symmetry, and alternating ...
Vishnu's user avatar
  • 2,080
6 votes
1 answer
8k views

Why are square planar coordination compounds with four different ligands optically inactive?

Why do square planar coordination compounds of type $\ce{[Mabcd]}$ not show optical activity, although they contain 4 different ligands (i.e. chiral central metal atom)?
Nikhil Chandratre's user avatar