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Topic: Bond Strength  (Read 4990 times)

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Offline sw2672

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Bond Strength
« on: September 06, 2006, 10:36:03 PM »
Generally, P=S double bond is known to be weaker than C=S double bond.
I would like to know which bond is weaker P=Se or P=S? Maybe, P=Se is weaker.  How much difference between them?
Please help me.
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Offline FeLiXe

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Re: Bond Strength
« Reply #1 on: September 07, 2006, 09:31:52 AM »
generally you have double bonds only if at least one element is second period

the atoms would to far away for a pi-bond otherwise

considering that P=Se would be even weaker than P=S because Selenium would be much too big for a pi bond
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Offline sw2672

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Re: Bond Strength
« Reply #2 on: September 10, 2006, 07:37:44 PM »
Yeah.. You are right.
However, I would like to know how much different energy between them? In addition, about the reference
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Offline Donaldson Tan

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Re: Bond Strength
« Reply #3 on: September 13, 2006, 05:28:12 AM »
For that, you can always refer to any standard data handbook.

The NIST Chemistry Web Book is a good place to start.
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