Isomers Of Nitrogen Difluoride..

[saltrock]

Why Nitrigen Difluorife(N2F2) Shows Geometric Isomerism??????? Can Anybody Help Me Please??? Thanks!

[chem_tr]

Hello, I have found this picture: http://www.webelements.com/webelements/compounds/media/N/F4N2-10036472.jpg
As you see from the structure, a cis-trans isomerism may be present; two nitrogens may be on the same level with their fluorines downwards (this is cis), or more stable one, trans configuration (as shown in the picture).

[saltrock]

Thanks a lot for your help!