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Receptors of Taste

27.Structure ...

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27.Structure of N(CH3)3 is non planar whereas N(SiH3)3 is planar.why? Explain the reason along with the structure.

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N (C H_{3})_{3}

N (S i H_{3})_{3}

s p^{3} -

N -

atom and Pyramidal structure.

Q. Structures of

N (C H_{3})_{3}

N (S i H_{3})_{3}

are different. It is due to the fact that :

N (C H_{3})_{3}

is pyramidal but

N (S i H_{3})_{3}

is planar. Reason: In

N (C H_{3})_{3}

N

remains on it causing

l p - b p

repulsion while in

N (S i H_{3})_{3}

, lone pair is transferred to vacant

d

S i

.

N (C H_{3})_{3}

is pyramidal but

N (S i H_{3})_{3}

is planar. Reason: In

N (S i H_{3})_{3}

N -

atom is transferred to the empty

d -

orbitals of silicon

(p π - d π

Q. Explain the following :

Boron trichloride has triangular planar geometry whereas aluminium trichloride has tetrahedral dimeric structure.

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