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All results from a given calculation for CH2CCH2 (allene)

using model chemistry: QCISD/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at QCISD/6-31+G**
 hartrees
Energy at 0K-116.307037
Energy at 298.15K 
HF Energy-115.872958
Nuclear repulsion energy58.871514
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 QCISD/6-31+G**
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 3212 3036 0.00      
2 A1 1531 1448 0.00      
3 A1 1102 1042 0.00      
4 B1 885 837 0.00      
5 B2 3211 3035 4.30      
6 B2 2049 1937 44.26      
7 B2 1480 1399 0.76      
8 E 3299 3119 2.78      
8 E 3299 3119 2.78      
9 E 1047 989 1.94      
9 E 1047 989 1.94      
10 E 874 826 59.35      
10 E 874 826 59.35      
11 E 344 325 7.70      
11 E 344 325 7.70      

Unscaled Zero Point Vibrational Energy (zpe) 12298.2 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 11626.7 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 QCISD/6-31+G**
ABC
4.86587 0.29274 0.29274

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

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 1.318
C3 0.000 0.000 -1.318
H4 0.000 0.927 1.876
H5 0.000 -0.927 1.876
H6 0.927 0.000 -1.876
H7 -0.927 0.000 -1.876

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.31751.31752.09282.09282.09282.0928
C21.31752.63511.08241.08243.32573.3257
C31.31752.63513.32573.32571.08241.0824
H42.09281.08243.32571.85413.97503.9750
H52.09281.08243.32571.85413.97503.9750
H62.09283.32571.08243.97503.97501.8541
H72.09283.32571.08243.97503.97501.8541

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.080 C1 C2 H5 121.080
C1 C3 H6 121.080 C1 C3 H7 121.080
C2 C1 C3 180.000 H4 C2 H5 117.841
H6 C3 H7 117.841
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability