CCL: specific optical rotation



 Hello,
 I need the experimental specific optical rotation values of a set of
 molecules:
 trans-1,2-dimethylcyclohexane
 trans-1,3-dimethylcyclohexane
 and other dimethyl, trimethyl, tetramethyl, ethyl-methy, diehtyl, etc
 cyclohexane derivatives.
 I would appreciate it if any one could give me some references to such
 experimental values.
    Thanks.
              Ricardo Nunez
              rnunez |-at-| dali.eis.uva.es