Topic: How come there are half bonds and 3/2 bonds? (Read 1993 times)

antimatter101 · « **on:** October 03, 2012, 12:20:34 AM »

Wikipedia explained that half bonds form when there is a deficiency of electrons, and "incomplete bonds" form when a functional group or molecule has insufficient electrons to share so an amount of electrons less than the number of atoms is shared between the group. It gave me an example as diborane (B2H6) but I don't see any "incomplete bonds" in that molecule! And if there is an insufficiency of electrons then that molecule can't form!

discodermolide · « **Reply #1 on:** October 03, 2012, 02:51:50 AM »

It's a three centre two electron bond. Have a read here:
http://voh.chem.ucla.edu/vohtar/fall03/classes/30B/pdf/diborane.pdf

antimatter101 · « **Reply #2 on:** October 14, 2012, 10:28:46 PM »

Is borane really that desperate to make a 3/2 bond? And how does it happen? Instantaneously or slowly?

discodermolide · « **Reply #3 on:** October 14, 2012, 10:59:13 PM »

Presumably it is desperate to fulfil its valence shell, if I remember correctly. It's been a long time since I had to deal with the bonding in diborane.
If it happens instantaneously or not I have no idea. But to hazard a guess I would say instantaneously.

Topic: How come there are half bonds and 3/2 bonds? (Read 1993 times)

antimatter101

How come there are half bonds and 3/2 bonds?

discodermolide

Re: How come there are half bonds and 3/2 bonds?

antimatter101

Re: How come there are half bonds and 3/2 bonds?

discodermolide

Re: How come there are half bonds and 3/2 bonds?

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