return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CCH2 (allene)

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-116.280790
Energy at 298.15K-116.283521
HF Energy-115.867837
Nuclear repulsion energy59.117531
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 MP2=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3237 3025 0.00 253.12 0.04 0.08
2 A1 1535 1434 0.00 28.59 0.59 0.74
3 A1 1116 1043 0.00 27.57 0.30 0.46
4 B1 913 853 0.00 20.11 0.75 0.86
5 B2 3237 3025 1.42 44.89 0.75 0.86
6 B2 2079 1943 24.57 0.11 0.75 0.86
7 B2 1482 1385 0.81 0.34 0.75 0.86
8 E 3332 3113 1.96 88.55 0.75 0.86
8 E 3332 3113 1.96 88.55 0.75 0.86
9 E 1047 978 0.18 0.12 0.75 0.86
9 E 1047 978 0.18 0.12 0.75 0.86
10 E 875 818 54.07 0.01 0.75 0.86
10 E 875 818 54.07 0.01 0.75 0.86
11 E 368 344 3.14 2.58 0.75 0.86
11 E 368 344 3.14 2.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12421.2 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 11606.3 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
4.89319 0.29545 0.29545

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 0.924 1.870
H5 0.000 -0.924 1.870
H6 0.924 0.000 -1.870
H7 -0.924 0.000 -1.870

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.31091.31092.08592.08592.08592.0859
C21.31092.62171.08031.08033.31233.3123
C31.31092.62173.31233.31231.08031.0803
H42.08591.08033.31231.84893.96173.9617
H52.08591.08033.31231.84893.96173.9617
H62.08593.31231.08033.96173.96171.8489
H72.08593.31231.08033.96173.96171.8489

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.162 C1 C2 H5 121.162
C1 C3 H6 121.162 C1 C3 H7 121.162
C2 C1 C3 180.000 H4 C2 H5 117.676
H6 C3 H7 117.676
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability