12 Isobutene,^1A_1,CC3,aug-cc-pVTZ C 0.00000000 0.00000000 1.43296298 C 0.00000000 0.00000000 0.09753414 C 0.00000000 1.26946740 -0.70106844 C 0.00000000 -1.26946740 -0.70106844 H 0.00000000 0.92525791 1.99336457 H 0.00000000 -0.92525791 1.99336457 H 0.00000000 2.14791527 -0.05599757 H 0.00000000 -2.14791527 -0.05599757 H 0.87857701 1.31414761 -1.34985792 H -0.87857701 1.31414761 -1.34985792 H 0.87857701 -1.31414761 -1.34985792 H -0.87857701 -1.31414761 -1.34985792