26.03.2018 Views

THUYẾT VÂN ĐẠO PHÂN TỬ MOLECULAR ORBITAL (MO)

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Ví duï:<br />

Toå hôïp tuyeán tính AO s cuûa ngtöû A vaø AO p cuûa ngtöû B thu<br />

ñöôïc 2 <strong>MO</strong> laø ψ 1<br />

vaø ψ 2<br />

.<br />

Giaû söû: Phaàn ñoùng goùp ψ sA ψ pB<br />

trong ψ 1<br />

c 1A<br />

= 0,5 c 1B<br />

= 0,6<br />

trong ψ 2<br />

c 2A<br />

= 0,5 c 2B<br />

= 0,4<br />

Ñieàu kieän chuaån hoùa: c 2 1A + c2 2A = 1 c2 1B + c2 2B = 1<br />

Ta coù:<br />

ψ 1<br />

= 0,7071ψ sA + 0,7746ψ pB<br />

ψ 2<br />

= 0,7071ψ sA + 0,6325ψ pB<br />

30

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