Now I understand the concept of rotating an ethane into staggered/eclipse and i also understand some of the concepts of rotation of the methyl groups to form symmetry. But could someone provide a link or something to help me understand planes of symmetry more? For example like how does staggered have 3 planes of symmetry and how would you go about it. Is it just picking the 3 seperate hydrogens of the ethane and they would all be inversion symmetry? I'm also not very sure how to like find inversion symmetry. Because couldn't cut the ethane eclipsed confromation straight down the middle and you would have two mirror images but eclipsed has no center of symmetry.. why? Am i getting the definition wrong? and if so how would ethane have it's plane of symmetry? I understand axis of symmetry being just the number of rotations of a group to get back to the "original" form but it's just all confusing. My textbook is trash in that it's short and only 500 pages and doesn't go in-depth in anything.
I read http://www.chemicalforums.com/index.php?topic=6666.0
, but still not very sure.