zmat angstroms
 c
 c   1 cc1     
 c   2 cc2        1 ccc3      
 c   3 cc4        2 ccc5         1 dih6   
 c   4 cc7        3 ccc8         2 dih9   
 c   5 cc10       4 ccc11        3 dih12  
 h   2 hc13       1 hcc14        3 dih15  
 h   3 hc16       2 hcc17        4 dih18  
 h   4 hc19       3 hcc20        5 dih21  
 h   5 hc22       4 hcc23        3 dih24  
 h   6 hc25       5 hcc26        4 dih27  
variables
cc1         1.400000                                                            
cc2         1.400000                                                            
ccc3        120.000                                                             
cc4         1.400000                                                            
ccc5        120.000                                                             
dih6          0.000                                                             
cc7         1.400000                                                            
ccc8        120.000                                                             
dih9          0.000                                                             
cc10        1.400000                                                            
ccc11       120.000                                                             
dih12         0.000                                                             
hc13        1.089000                                                            
hcc14       120.000                                                             
dih15       180.000                                                             
hc16        1.089000                                                            
hcc17       120.000                                                             
dih18       180.000                                                             
hc19        1.089000                                                            
hcc20       120.000                                                             
dih21       180.000                                                             
hc22        1.089000                                                            
hcc23       120.000                                                             
dih24       180.000                                                             
hc25        1.089000                                                            
hcc26       120.000                                                             
dih27       180.000                                                             
end
