Isomerism 同分异构 2Pz 2pz π Trans- 反式 Cis- 顺式 H H C=C Boiling point melting point density H3C CH3 H CH3 Cis-3.5℃ -139.3℃ 0.6213 C=C Trans-.0.9℃ -105.5℃0.6042
TransCisIsomerism 同分异构 顺式 反式 C C H3C H H CH3 C C H3C H CH3 H Boiling point melting point density Cis- 3.5℃ -139.3℃ 0.6213 Trans- 0.9℃ -105.5℃ 0.6042 Cis- 顺式
Isomerism 同分异构 N=N 530nm 480nm azobenzene 偶氮苯 Ultraviolet light N=N Visible light or heat【 tras-☑oben☑ene cis-a☑oben☑ene 反式一偶氮苯 顺式偶氮苯
Isomerism 同分异构 azobenzene Ultraviolet light 反式-偶氮苯 顺式-偶氮苯 偶氮苯 Visible light or heat
Isomerismi 分异构 H.( RI- 3 C=C H R2 R4 CHs H.C thodopsin HC NH-opsin hy CH CH H RIC-C. H:C. H NH-opsin R2 3 H.C H H H H CHs H2 metarhodopsin I1
C C R3 R R4 2 R1 Isomerism 同分异构 C C R4 R R3 2 R1 hν
Optical Isomerism 光学异构 Chiral C 手性碳 spi hybridized C : H H CH3-- C C--CH3 N H2 NH2 Mirrar Mirror image of left hand Left hand is identical to right hand
C H C H 3 C O O H N H 2 H O O C C H C H 3 N H 2 Chiral C sp3 手性碳 hybridized C Optical Isomerism 光学异构