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All results from a given calculation for C3H4 (cyclopropene)

using model chemistry: HF/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 HF/aug-cc-pVDZ
 hartrees
Energy at 0K-115.836571
Energy at 298.15K-115.839934
HF Energy-115.836571
Nuclear repulsion energy64.124341
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 HF/aug-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 3469 3159 0.64 114.82 0.14 0.25
2 A1 3186 2902 87.89 139.39 0.13 0.24
3 A1 1852 1686 26.28 87.47 0.07 0.13
4 A1 1626 1480 1.78 11.14 0.13 0.23
5 A1 1239 1128 0.02 18.53 0.14 0.24
6 A1 999 910 3.14 5.41 0.54 0.70
7 A2 1086 989 0.00 3.44 0.75 0.86
8 A2 946 861 0.00 2.47 0.75 0.86
9 B1 3251 2960 54.54 107.22 0.75 0.86
10 B1 1181 1076 2.57 0.11 0.75 0.86
11 B1 665 605 103.50 0.02 0.75 0.86
12 B2 3419 3113 1.24 67.49 0.75 0.86
13 B2 1169 1065 33.10 0.56 0.75 0.86
14 B2 1142 1040 28.86 0.06 0.75 0.86
15 B2 862 785 22.29 14.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13045.8 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 11879.5 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 HF/aug-cc-pVDZ
ABC
1.02124 0.73490 0.46683

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.859
C2 0.000 0.641 -0.499
C3 0.000 -0.641 -0.499
H4 0.000 1.569 -1.039
H5 0.000 -1.569 -1.039
H6 0.910 0.000 1.456
H7 -0.910 0.000 1.456

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7
C11.50231.50232.46272.46271.08801.0880
C21.50231.28291.07332.27572.24992.2499
C31.50231.28292.27571.07332.24992.2499
H42.46271.07332.27573.13873.08453.0845
H52.46272.27571.07333.13873.08453.0845
H61.08802.24992.24993.08453.08451.8192
H71.08802.24992.24993.08453.08451.8192

picture of cyclopropene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 64.723 C1 C2 H4 145.447
C1 C3 C2 64.723 C1 C3 H5 145.447
C2 C1 C3 50.553 C2 C1 H6 119.744
C2 C1 H7 119.744 C2 C3 H5 149.829
C3 C1 H6 119.744 C3 C1 H7 119.744
C3 C2 H4 149.829 H6 C1 H7 113.451
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.571      
2 C 0.234      
3 C 0.234      
4 H -0.282      
5 H -0.282      
6 H -0.238      
7 H -0.238      


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 -0.498 0.498
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.859 0.000 0.000
y 0.000 -16.802 0.000
z 0.000 0.000 -18.804
Traceless
 xyz
x -2.056 0.000 0.000
y 0.000 2.529 0.000
z 0.000 0.000 -0.474
Polar
3z2-r2-0.948
x2-y2-3.057
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.048 0.000 0.000
y 0.000 5.430 0.000
z 0.000 0.000 5.448


<r2> (average value of r2) Å2
<r2> 36.884
(<r2>)1/2 6.073