Topic: Why is NH3 islobal with [Mn(CO)5]- (Read 6358 times)

spirochete · « **on:** February 16, 2009, 12:18:17 PM »

The Mn in the complex is ligated by 5 molecules of CO. How can this possibly be isolobal with NH3 which has three bonds to hydrogen and a lone pair?

sjb · « **Reply #1 on:** February 16, 2009, 05:01:35 PM »

What do you understand by the term isolobal? Seems to me they are fairly similar - heavy atom and a lone pair?

http://en.wikipedia.org/w/index.php?title=Isolobal_principle&oldid=174678620

S

spirochete · « **Reply #2 on:** February 16, 2009, 07:22:31 PM »

It means the atoms share the same number of valence electrons and same orbital shapes.

Mn has a valence configuration of 3d⁵4S¹. Nitrogen is 2S²2p³.

To be honest now that I try again to draw it I'm definitely not sure how the Manganese complex would even look so I can compare it to ammonia. Could you help me out on that?

macman104 · « **Reply #3 on:** February 16, 2009, 07:29:45 PM »

That's isoelectronic:

http://en.wikipedia.org/wiki/Isoelectronic

sjb · « **Reply #4 on:** February 18, 2009, 09:34:38 AM »

http://www.3dchem.com/inorganicmolecule.asp?id=1084 any use for visualizing the manganese complex?

AWK · « **Reply #5 on:** February 18, 2009, 09:44:25 AM »

ammonia
http://www.3dchem.com/inorganicmolecule.asp?id=1128

Topic: Why is NH3 islobal with [Mn(CO)5]- (Read 6358 times)

spirochete

Why is NH3 islobal with [Mn(CO)5]-

sjb

Re: Why is NH3 islobal with [Mn(CO)5]-

spirochete

Re: Why is NH3 islobal with [Mn(CO)5]-

macman104

Re: Why is NH3 islobal with [Mn(CO)5]-

sjb

Re: Why is NH3 islobal with [Mn(CO)5]-

AWK

Re: Why is NH3 islobal with [Mn(CO)5]-

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