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All results from a given calculation for C3H3N (acrylonitrile)

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-170.323158
Energy at 298.15K-170.325490
HF Energy-169.764166
Nuclear repulsion energy89.502309
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 QCISD/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 A' 3286 3130 3.98      
2 A' 3225 3071 1.36      
3 A' 3195 3043 1.01      
4 A' 2336 2224 1.86      
5 A' 1709 1628 0.95      
6 A' 1476 1406 4.79      
7 A' 1346 1282 0.45      
8 A' 1132 1078 3.48      
9 A' 889 846 1.17      
10 A' 570 543 0.02      
11 A' 234 223 3.10      
12 A" 1001 953 35.02      
13 A" 971 925 24.16      
14 A" 694 661 10.53      
15 A" 339 323 0.69      

Unscaled Zero Point Vibrational Energy (zpe) 11201.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 10666.8 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 QCISD/6-31G*
ABC
1.64352 0.16357 0.14876

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.583 -0.537 0.000
N2 -1.077 -1.595 0.000
C3 0.000 0.787 0.000
H4 -0.705 1.616 0.000
C5 1.328 0.983 0.000
H6 2.034 0.156 0.000
H7 1.742 1.989 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.16731.44702.15692.44272.70793.4334
N21.16732.61423.23263.52623.57024.5597
C31.44702.61421.08851.34282.13002.1163
H42.15693.23261.08852.12973.10452.4753
C52.44273.52621.34282.12971.08781.0873
H62.70793.57022.13003.10451.08781.8563
H73.43344.55972.11632.47531.08731.8563

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 115.846 C1 C3 C5 122.185
N2 C1 C3 178.753 C3 C5 H6 122.060
C3 C5 H7 120.761 H4 C3 C5 121.969
H6 C5 H7 117.178
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability