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All results from a given calculation for CH2CCH2 (allene)

using model chemistry: CCSD(T)/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-116.364711
Energy at 298.15K 
HF Energy-115.901245
Nuclear repulsion energy58.957356
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 CCSD(T)/TZVP
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 1083 1042        
2 B1 874 841        
3 B2 2012 1937        
4 E 3238 3117        
5 E 3238 3117        
6 E 3155 3037        
7 E 3154 3035        
8 E 1502 1446        
8 E 1456 1402        
9 E 1019 980        
9 E 1018 980        
10 E 822 791        
10 E 822 791        
11 E 329 317        
11 E 327 315        

Unscaled Zero Point Vibrational Energy (zpe) 12024.3 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 11573.4 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 CCSD(T)/TZVP
ABC
4.84450 0.29409 0.29409

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/TZVP

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 1.314
C3 0.000 0.000 -1.314
H4 0.000 0.929 1.874
H5 0.000 -0.929 1.874
H6 0.929 0.000 -1.874
H7 -0.929 0.000 -1.874

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.31391.31392.09132.09132.09132.0913
C21.31392.62771.08461.08463.32013.3201
C31.31392.62773.32013.32011.08461.0846
H42.09131.08463.32011.85823.97083.9708
H52.09131.08463.32011.85823.97083.9708
H62.09133.32011.08463.97083.97081.8582
H72.09133.32011.08463.97083.97081.8582

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.065 C1 C2 H5 121.065
C1 C3 H6 121.065 C1 C3 H7 121.065
C2 C1 C3 180.000 H4 C2 H5 117.870
H6 C3 H7 117.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability