confirmations of higher alkane Flashcards
In general, the all-anti conformer
is most stable
conformers with zig-zag appearances are called
zig-zags
The most stable cycloalkanes should have bond angles
near
109.5º
cyclopentane(108 degrees) vs cyclohexane(120 degrees), which is more stable?
cyclohexane
cyclopropane has a bond angle of
60
cyclobutane has a bond angle of
90
cyclopentane has a bond angle of
108
cyclohexane has a bond angloe of
120
cycloheptane has a bond angle of
70 degrees
how do we measure stability
stability using enthalpies of combustion
Heat per CH2
combusted is smallest for
cyclohexane
cyclopropane is characterized by extremely severe
angle strain—its internal C–C–C bond angle is only 60º
C–C bonds in cyclopropane are ______ and derived from the bond angled overlap of ______hybrids
-bent
-sp3
Internal C–C bonds are ____and_____ to break
weak
liable
Cyclopropane also suffers from _____due to ____
torsional strain
-eclipsing C-H’s