How to get N2 molecule orbital theoretically

[einstein1921]

How to get N2 molecule orbital theoretically with quantum chemistry program like GAUSSIAN !for example, how to get the picture attached? Thank you!

 

[DrDu]

You could try to do it yourself, using e.g. Yaehmop:
http://yaehmop.sourceforge.net/
There is an example file for XeF4