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All results from a given calculation for CH2CCH2 (allene)

using model chemistry: QCISD(T)/cc-pVDZ

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(T)/cc-pVDZ
 hartrees
Energy at 0K-116.317002
Energy at 298.15K 
HF Energy-115.869642
Nuclear repulsion energy58.254860
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(T)/cc-pVDZ
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 1076 1025        
2 B1 854 814        
3 B2 2011 1917        
4 E 3239 3087        
5 E 3239 3087        
6 E 3146 2998        
7 E 3145 2997        
8 E 1477 1408        
8 E 1424 1358        
9 E 1012 964        
9 E 1012 964        
10 E 832 793        
10 E 832 793        
11 E 340 324        
11 E 339 323        

Unscaled Zero Point Vibrational Energy (zpe) 11988.0 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 11425.8 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(T)/cc-pVDZ
ABC
4.71681 0.28723 0.28723

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/cc-pVDZ

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 1.330
C3 0.000 0.000 -1.330
H4 0.000 0.942 1.895
H5 0.000 -0.942 1.895
H6 0.942 0.000 -1.895
H7 -0.942 0.000 -1.895

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.32961.32962.11592.11592.11592.1159
C21.32962.65921.09821.09823.35913.3591
C31.32962.65923.35913.35911.09821.0982
H42.11591.09823.35911.88314.01694.0169
H52.11591.09823.35911.88314.01694.0169
H62.11593.35911.09824.01694.01691.8831
H72.11593.35911.09824.01694.01691.8831

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 120.979 C1 C2 H5 120.979
C1 C3 H6 120.979 C1 C3 H7 120.979
C2 C1 C3 180.000 H4 C2 H5 118.042
H6 C3 H7 118.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability