yes, try:

chimera.selection.currentAtoms()

this will return a list of the currently selected atoms in the Chimera viewer.

For your purposes, it sounds like you want vectors between every two

atoms that you subsequently select. Watch out however, that the list

returned by the above command need not be in the order that you made

the selection. I noticed that in general the selection routines return

atoms in arbitrary order, independent of the selection order or their

position in the structure. Not sure if there is any way to enforce any

kind of order?