The factor behind this is the orientation the the overlapped orbitals. Sigma bonds an outcome from head-on(co-axial) overlapping while pi bonds room outcome the lateral(para-axial) overlapping. Below is a photographic representation of ethene(sp2 hybridized C atoms) :

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The greater the level of overlapping, the greater the probability of finding the valence electrons in between the nuclei and hence the bond will be stronger & shorter.

You are watching: Is a pi bond stronger than a sigma bond

In MOT, this can be described using Overlap Integral. This is just how Atkins depicts that :

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In simple terms, after creating a sigma-bond (a pre-requisite because that pi-bonds), the 2 atoms gain locked follow me the inter-nuclear axis. Together a result, the orbitals easily accessible for pi-bonding deserve to only partly overlap, thus creating a weaker bond.


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edited Jun 19 "14 at 7:00
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Melanie Shebel♦
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blackSmithblackSmith
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As proclaimed previously, it is as result of the head-on overlap the sigma bonds and the lateral overlap of pi-bonds.

The smaller overlap that pi bonds also explains why twin and triple bonds basically exist only for 2nd row aspects (C,N,O especially) and not for higher row elements. A C=C bond has a length of 133 pm. A Si-Si bond length is at roughly 186 pm, as such the donation of the pi-integral overlap is practically negligible.

The inability of Silicium to kind strong pi bond is also one that the answer why life on planet is carbon based and not silicium based, since the wealth of necessary beer-selection.com is in component due to the capability of carbon to type strong double and triple bonds.


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answer Jun 19 "14 in ~ 3:49
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Pi bond involve party overlap while sigma bond entails head top top or axial overlap. Axial overlaps have higher degree of overlapping than sideways overlap.


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edited Jun 18 "14 in ~ 22:57
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Unsaturated compounds (due to the visibility of a double bond) are more reactive than saturated compounds, because the electron density at the internuclear axis is zero in a pi bond (in contrast to the sigma bond).

See more: Which Rivet Is Used For Riveting Magnesium Alloy Structures?


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edited Mar 5 "14 at 9:06
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answer Mar 5 "14 in ~ 5:12
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Highly energetic question. Knife 10 call (not counting the association bonus) in order come answer this question. The reputation requirement helps protect this question from spam and non-answer activity.

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