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All results from a given calculation for C4H5N ((Z)-2-Butenenitrile)

using model chemistry: MP2/CEP-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 MP2/CEP-31G
 hartrees
Energy at 0K-34.835256
Energy at 298.15K-34.839600
HF Energy-34.398607
Nuclear repulsion energy71.574138
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/CEP-31G
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 3202 3094 25.71      
2 A 3158 3051 32.07      
3 A 3142 3036 5.35      
4 A 3033 2931 25.41      
5 A 2017 1949 6.15      
6 A 1652 1597 0.36      
7 A 1519 1467 12.36      
8 A 1464 1415 6.99      
9 A 1406 1359 1.15      
10 A 1269 1227 0.73      
11 A 1134 1096 1.26      
12 A 963 930 12.27      
13 A 877 847 1.24      
14 A 638 617 0.62      
15 A 367 355 0.12      
16 A 151 146 3.05      
17 A 3121 3016 37.80      
18 A 1507 1456 12.29      
19 A 1085 1048 1.69      
20 A 939 908 0.27      
21 A 757 732 56.48      
22 A 480 464 6.90      
23 A 257 249 1.30      
24 A 128 123 0.13      

Unscaled Zero Point Vibrational Energy (zpe) 17132.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 16555.4 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 MP2/CEP-31G
ABC
0.37297 0.10782 0.08501

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.257 0.251 0.000
N2 -2.303 -0.395 0.000
C3 0.000 1.035 0.000
H4 -0.110 2.128 0.000
C5 1.259 0.440 0.000
H6 2.134 1.114 0.000
C7 1.537 -1.075 0.000
H8 0.597 -1.662 0.000
H9 2.132 -1.358 0.896
H10 2.132 -1.358 -0.896

Atom - Atom Distances (Å)
  C1 N2 C3 H4 C5 H6 C7 H8 H9 H10
C11.23001.48102.20022.52243.49813.09262.66363.85613.8561
N21.23002.71103.34373.65854.68633.90043.16504.62574.6257
C31.48102.71101.09921.39242.13502.61072.76203.32723.3272
H42.20023.34371.09922.17362.46203.60223.85574.24024.2402
C52.52243.65851.39242.17361.10431.54032.20332.18992.1899
H63.49814.68632.13502.46201.10432.26863.17252.62882.6288
C73.09263.90042.61073.60221.54032.26861.10841.11191.1119
H82.66363.16502.76203.85572.20333.17251.10841.80301.8030
H93.85614.62573.32724.24022.18992.62881.11191.80301.7930
H103.85614.62573.32724.24022.18992.62881.11191.80301.7930

picture of (Z)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 H4 116.236 C1 C3 C5 122.738
N2 C1 C3 179.718 C3 C5 H6 117.086
C3 C5 C7 125.724 H4 C3 C5 121.026
C5 C7 H8 111.543 C5 C7 H9 110.270
C5 C7 H10 110.270 H6 C5 C7 117.190
H8 C7 H9 108.593 H8 C7 H10 108.593
H9 C7 H10 107.459
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability