How does the structuaral formula of butane and butene differ?

1 Answer
anor277
May 11, 2018

You gots #C_4H_10# versus #C_4H_8#...the LATTER formula has ONE so-called [degree of unsaturation.](https://socratic.org/questions/5a2d1fec11ef6b07432f27fc)

Explanation:

And #C_4H_10# can form TWO structural isomers. Butylene can form FOUR structural or geometric isomers...the which are...

#H_2C=C-CH_2CH_3# #"1-butylene"#

#H_3C-CH=CHCH_3# #"2-butylene"#; how many geometric isomers can this form...?

#"isobutylene"# #(H_3C)_2C=CH_2#

#C_4H_8# can FORM TWO ring structures (and the ring ALSO REPRESENTS one degree of unsaturation). What are these?

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