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All results from a given calculation for C3H3N (acrylonitrile)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-169.200989
Energy at 298.15K-169.203467
HF Energy-168.813011
Nuclear repulsion energy89.033660
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3282 3122 4.08      
2 A' 3212 3055 0.96      
3 A' 3189 3034 0.61      
4 A' 2138 2034 6.61      
5 A' 1666 1585 4.13      
6 A' 1519 1445 2.19      
7 A' 1380 1313 0.06      
8 A' 1162 1106 3.65      
9 A' 863 821 0.66      
10 A' 612 582 0.12      
11 A' 261 248 1.49      
12 A" 1033 983 30.23      
13 A" 986 938 42.11      
14 A" 750 714 8.67      
15 A" 379 361 0.10      

Unscaled Zero Point Vibrational Energy (zpe) 11215.9 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 10669.7 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 MP2/3-21G*
ABC
1.65226 0.16135 0.14699

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.591 -0.528 0.000
N2 -1.074 -1.615 0.000
C3 0.000 0.785 0.000
H4 -0.693 1.622 0.000
C5 1.330 0.995 0.000
H6 2.042 0.176 0.000
H7 1.732 2.002 0.000

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 H7
C11.18961.43982.15252.45102.72493.4346
N21.18962.62933.25953.54813.59354.5778
C31.43982.62931.08661.34612.13082.1168
H42.15253.25951.08662.11753.09352.4541
C52.45103.54811.34612.11751.08551.0847
H62.72493.59352.13083.09351.08551.8529
H73.43464.57782.11682.45411.08471.8529

picture of acrylonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 116.166 C1 C3 C5 123.194
N2 C1 C3 179.734 C3 C5 H6 122.024
C3 C5 H7 120.727 H4 C3 C5 120.639
H6 C5 H7 117.249
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability