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All results from a given calculation for CH2CCH2 (allene)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-115.949927
Energy at 298.15K-115.952696
HF Energy-115.949927
Nuclear repulsion energy59.372356
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 B1B95/3-21G
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 3170 3032 0.00 262.79 0.05 0.10
2 A1 1530 1464 0.00 27.76 0.64 0.78
3 A1 1137 1088 0.00 46.10 0.33 0.50
4 B1 908 868 0.00 27.83 0.75 0.86
5 B2 3167 3030 0.22 41.61 0.75 0.86
6 B2 2104 2013 51.13 0.32 0.75 0.86
7 B2 1484 1420 6.46 0.67 0.75 0.86
8 E 3243 3103 1.90 99.87 0.75 0.86
8 E 3243 3103 1.90 99.87 0.75 0.86
9 E 1067 1021 1.83 0.90 0.75 0.86
9 E 1067 1021 1.83 0.90 0.75 0.86
10 E 919 879 81.73 0.08 0.75 0.86
10 E 919 879 81.73 0.08 0.75 0.86
11 E 369 353 6.53 3.69 0.75 0.86
11 E 369 353 6.53 3.69 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12348.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 11813.4 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 B1B95/3-21G
ABC
4.88812 0.29893 0.29893

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

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 1.301
C3 0.000 0.000 -1.301
H4 0.000 0.925 1.867
H5 0.000 -0.925 1.867
H6 0.925 0.000 -1.867
H7 -0.925 0.000 -1.867

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.30091.30092.08362.08362.08362.0836
C21.30092.60181.08451.08453.30023.3002
C31.30092.60183.30023.30021.08451.0845
H42.08361.08453.30021.84983.95663.9566
H52.08361.08453.30021.84983.95663.9566
H62.08363.30021.08453.95663.95661.8498
H72.08363.30021.08453.95663.95661.8498

picture of allene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 121.473 C1 C2 H5 121.473
C1 C3 H6 121.473 C1 C3 H7 121.473
C2 C1 C3 180.000 H4 C2 H5 117.054
H6 C3 H7 117.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.105      
2 C -0.519      
3 C -0.519      
4 H 0.233      
5 H 0.233      
6 H 0.233      
7 H 0.233      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.156 0.000 0.000
y 0.000 -19.156 0.000
z 0.000 0.000 -14.900
Traceless
 xyz
x -2.128 0.000 0.000
y 0.000 -2.128 0.000
z 0.000 0.000 4.256
Polar
3z2-r28.511
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.189 0.000 0.000
y 0.000 2.189 0.000
z 0.000 0.000 7.999


<r2> (average value of r2) Å2
<r2> 48.752
(<r2>)1/2 6.982