c161l32_11_21 - Molecular Orbitals We said that bonds form...

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Molecular Orbitals Molecular Orbitals W We said that bonds form when electrons simultaneously occupy the atomic orbitals on two atoms W Mathematically, we can take the two atomic orbitals and make two molecular orbitals one is lower in energy (the sum of the two) one is higher in energy (the difference) If the orbital is cylindrically symmetrical about the bond axis, we call it a σ -orbital (in analogy to s orbital)
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Ways to make Ways to make σ σ - - bonds bonds W Overlap of s-orbitals W Overlap of p-orbitals pointing along the bond axis By convention, we call the bond axis the z- axis W Overlap of p z with an s-orbital
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σ σ - - orbital orbital
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Other kinds of molecular Other kinds of molecular orbitals orbitals W When other p-orbital overlap, the molecular orbital formed is not cylindrically symmetrical W Look like “stretched out” p-orbitals W Called π -orbitals
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Hybridization of Orbitals Hybridization of Orbitals W Orbitals are mathematical functions that describe electron clouds W
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This note was uploaded on 04/06/2011 for the course CHEMISTRY 161 taught by Professor Seigel during the Fall '10 term at Rutgers.

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c161l32_11_21 - Molecular Orbitals We said that bonds form...

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