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All results from a given calculation for CH2CCH2 (allene)

using model chemistry: G3MP2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at G3MP2
 hartrees
Energy at 0K-116.444039
Energy at 298.15K-116.439282
HF Energy-115.861101
Nuclear repulsion energy59.685666
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at HF/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3330 3138 0.00 272.36 0.05 0.09
2 A1 1632 1537 0.00 14.00 0.69 0.82
3 A1 1193 1124 0.00 78.05 0.31 0.48
4 B1 951 896 0.00 19.04 0.75 0.86
5 B2 3327 3135 6.23 52.08 0.75 0.86
6 B2 2214 2086 80.05 0.09 0.75 0.86
7 B2 1568 1477 0.05 0.25 0.75 0.86
8 E 3407 3210 5.42 103.13 0.75 0.86
8 E 3407 3210 5.42 103.13 0.75 0.86
9 E 1124 1059 0.31 0.86 0.75 0.86
9 E 1124 1059 0.31 0.86 0.75 0.86
10 E 998 941 63.10 1.00 0.75 0.86
10 E 998 941 63.10 1.00 0.75 0.86
11 E 410 386 4.24 4.27 0.75 0.86
11 E 410 386 4.24 4.27 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13047.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 12293.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2=FULL/6-31G*
ABC
4.86855 0.29477 0.29477

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.000 1.311
C3 0.000 0.000 -1.311
H4 0.000 0.927 1.877
H5 0.000 -0.927 1.877
H6 0.927 0.000 -1.877
H7 -0.927 0.000 -1.877

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.31121.31122.09302.09302.09302.0930
C21.31122.62241.08571.08573.31983.3198
C31.31122.62243.31983.31981.08571.0857
H42.09301.08573.31981.85363.97553.9755
H52.09301.08573.31981.85363.97553.9755
H62.09303.31981.08573.97553.97551.8536
H72.09303.31981.08573.97553.97551.8536

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.153 C1 C2 H5 121.153
C1 C3 H6 121.153 C1 C3 H7 121.153
C2 C1 C3 180.000 H4 C2 H5 117.694
H6 C3 H7 117.694
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability