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

using model chemistry: MP2/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G*
 hartrees
Energy at 0K-209.471058
Energy at 298.15K-209.475455
HF Energy-208.803565
Nuclear repulsion energy137.726892
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 MP2/6-31G*
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' 3238 3053 3.99      
2 A' 3222 3038 8.01      
3 A' 3200 3018 7.20      
4 A' 3101 2924 10.17      
5 A' 2202 2076 0.10      
6 A' 1732 1633 5.50      
7 A' 1551 1462 13.02      
8 A' 1473 1389 2.42      
9 A' 1364 1286 0.27      
10 A' 1348 1271 0.29      
11 A' 1168 1102 0.18      
12 A' 1061 1001 4.46      
13 A' 938 884 6.46      
14 A' 555 523 0.03      
15 A' 395 373 1.20      
16 A' 175 165 4.31      
17 A" 3178 2997 9.13      
18 A" 1538 1450 8.53      
19 A" 1100 1037 0.18      
20 A" 1000 943 41.21      
21 A" 795 750 0.89      
22 A" 469 442 4.95      
23 A" 194 183 1.53      
24 A" 173 163 0.83      

Unscaled Zero Point Vibrational Energy (zpe) 17584.0 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 16581.8 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 MP2/6-31G*
ABC
1.26259 0.07595 0.07260

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.644 0.460 0.000
H2 2.656 -1.082 0.880
H3 2.656 -1.082 -0.880
C4 2.262 -0.564 0.000
H5 0.286 -1.565 0.000
C6 0.769 -0.589 0.000
H7 0.443 1.508 0.000
C8 0.000 0.514 0.000
N9 -2.612 0.413 0.000
C10 -1.431 0.450 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.77571.77571.09283.10802.14842.43732.64435.25574.0744
H21.77571.76081.09512.57362.14013.51823.22135.54614.4521
H31.77571.76081.09512.57362.14013.51823.22135.54614.4521
C41.09281.09511.09512.21481.49312.75632.50534.97033.8288
H53.10802.57362.57362.21481.08943.07702.09923.50912.6474
C62.14842.14012.14011.49311.08942.12131.34423.52582.4321
H72.43733.51823.51822.75633.07702.12131.08783.24492.1518
C82.64433.22133.22132.50532.09921.34421.08782.61371.4321
N95.25575.54615.54614.97033.50913.52583.24492.61371.1816
C104.07444.45214.45213.82882.64742.43212.15181.43211.1816

picture of (E)-2-Butenenitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C4 H2 108.512 H1 C4 H3 108.512
H1 C4 C6 111.424 H2 C4 H3 107.019
H2 C4 C6 110.618 H3 C4 C6 110.618
C4 C6 H5 117.234 C4 C6 C8 123.924
H5 C6 C8 118.841 C6 C8 H7 121.083
C6 C8 C10 122.298 H7 C8 C10 116.619
C8 C10 N9 179.181
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability