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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: mPW1PW91/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2v 1A1
Energy calculated at mPW1PW91/aug-cc-pVDZ
 hartrees
Energy at 0K-116.602707
Energy at 298.15K-116.605907
HF Energy-116.602707
Nuclear repulsion energy63.708080
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 mPW1PW91/aug-cc-pVDZ
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 3330 3191 0.10 145.00 0.13 0.23
2 A1 3066 2938 73.56 151.74 0.13 0.22
3 A1 1748 1675 15.94 65.98 0.07 0.12
4 A1 1513 1450 1.67 10.55 0.20 0.33
5 A1 1180 1131 0.29 16.51 0.12 0.21
6 A1 924 885 4.81 4.21 0.62 0.77
7 A2 1013 971 0.00 2.47 0.75 0.86
8 A2 831 796 0.00 1.07 0.75 0.86
9 B1 3138 3008 43.43 111.17 0.75 0.86
10 B1 1104 1058 1.37 0.10 0.75 0.86
11 B1 580 556 86.53 0.04 0.75 0.86
12 B2 3281 3144 0.36 78.28 0.75 0.86
13 B2 1067 1023 31.32 0.30 0.75 0.86
14 B2 1033 989 23.87 0.09 0.75 0.86
15 B2 808 774 19.35 13.71 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12308.0 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 11794.7 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 mPW1PW91/aug-cc-pVDZ
ABC
1.00028 0.73099 0.46156

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.861
C2 0.000 0.649 -0.500
C3 0.000 -0.649 -0.500
H4 0.000 1.584 -1.044
H5 0.000 -1.584 -1.044
H6 0.917 0.000 1.461
H7 -0.917 0.000 1.461

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50721.50722.47762.47761.09601.0960
C21.50721.29741.08232.29822.25962.2596
C31.50721.29742.29821.08232.25962.2596
H42.47761.08232.29823.16803.10263.1026
H52.47762.29821.08233.16803.10263.1026
H61.09602.25962.25963.10263.10261.8343
H71.09602.25962.25963.10263.10261.8343

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.506 C1 C2 H4 145.706
C1 C3 C2 64.506 C1 C3 H5 145.706
C2 C1 C3 50.988 C2 C1 H6 119.618
C2 C1 H7 119.618 C2 C3 H5 149.788
C3 C1 H6 119.618 C3 C1 H7 119.618
C3 C2 H4 149.788 H6 C1 H7 113.606
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.638      
2 C 0.394      
3 C 0.394      
4 H -0.356      
5 H -0.356      
6 H -0.357      
7 H -0.357      


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 -0.477 0.477
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.500 0.000 0.000
y 0.000 -16.772 0.000
z 0.000 0.000 -18.654
Traceless
 xyz
x -1.787 0.000 0.000
y 0.000 2.305 0.000
z 0.000 0.000 -0.518
Polar
3z2-r2-1.036
x2-y2-2.728
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.149 0.000 0.000
y 0.000 5.555 0.000
z 0.000 0.000 5.688


<r2> (average value of r2) Å2
<r2> 37.076
(<r2>)1/2 6.089