#ZMATRIX GAUSSIAN example using dummy atoms

X
C1  X halfcc
O   X     ox C1 90.
C2  X halfcc  O 90. C1 180.0
H1 C1     ch  X hcc  O  hcco
H2 C1     ch  X hcc  O -hcco
H3 C2     ch  X hcc  O  hcco
H4 C2     ch  X hcc  O -hcco
 
halfcc   0.75
ox       1.0
ch       1.08
hcc    130.0
hcco   130.0