Kromofor yang menyebabkan terjadiny

Kromofor yang menyebabkan terjadinya transis π→π^* ialah sistem yang mempunyai elektron pada orbital molekul π. Senyawa organik tidak jenuh mempunyai orbital molekul π Contoh kromofor jenis π→π^* ialah =C=C= dan –C≡C-. Meskipun kedua absorpsi disebabkan oleh transisi π→π^*, lingkungan elektron pada gugus karbonil tidak sama dengan lingkungan elektron di sekitar katan rangkap tiga. Jadi, transisinya memerlukan energi yang berbeda. Intensitas absorpsi disebabkan oleh transisi π→π^* selalu lebih kuat 10 – 100 kali intensitas absorpsi yang disebabkan oleh jenis transisi n → σ^* atau n → π^* (Creswell et al, 1982).

Results (English) 1:

Kromofor that cause the occurrence of π → π ^ transis * is a system that has electrons in molecular orbitals of π. organic compounds not saturated molecular orbital has π π type kromofor Example → π ^ * is = C = C = C ≡ C and –-. Although both absorption caused by transition π → π ^ *, electron environment on the carbonyl group is not equal to the electron environment around triple katan. So, transisinya requires a different energy. The intensity of the absorption caused by transition π → π ^ * always stronger 10-100 times the intensity of the absorption caused by this type of transition n → σ ^ * or n → π ^ * (Creswell et al, 1982).

Results (English) 2:

Chromophore which causes Transitional π → π ^ * is a system that has electrons in π molecular orbitals. Unsaturated organic compounds having a molecular orbital π Example chromophore types of π → π ^ * is = C = C = and -C≡C-. Although the absorption caused by the transition π → π ^ *, environmental electrons of the carbonyl group is not the same as the surrounding environment forces the electrons in triplicate. Thus, the transition requires a different energy. The intensity of the absorption caused by the transition π → π ^ * always stronger 10-100 times the intensity of the absorption caused by the type of transition n → σ ^ * or n → π ^ * (Creswell et al, 1982).