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

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-35.193411
Energy at 298.15K-35.197719
HF Energy-34.520835
Nuclear repulsion energy71.618145
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-121G*
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' 3216 3064 5.43      
2 A' 3197 3046 10.46      
3 A' 3172 3022 11.18      
4 A' 3065 2920 16.98      
5 A' 2130 2029 0.07      
6 A' 1684 1604 5.38      
7 A' 1527 1455 14.71      
8 A' 1450 1381 2.53      
9 A' 1335 1272 0.25      
10 A' 1318 1256 0.63      
11 A' 1147 1093 0.03      
12 A' 1031 982 5.29      
13 A' 914 871 5.83      
14 A' 541 515 0.04      
15 A' 385 366 0.93      
16 A' 168 160 3.58      
17 A" 3150 3001 13.84      
18 A" 1509 1438 9.87      
19 A" 1076 1025 1.70      
20 A" 973 927 52.12      
21 A" 770 733 0.69      
22 A" 452 431 2.97      
23 A" 182 174 1.50      
24 A" 168 160 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 17277.5 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 16462.0 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-121G*
ABC
1.23955 0.07508 0.07174

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.617 0.130 0.000
H2 2.425 -1.404 0.883
H3 2.425 -1.404 -0.883
C4 2.106 -0.837 0.000
H5 -0.009 -1.560 0.000
C6 0.610 -0.662 0.000
H7 0.570 1.475 0.000
C8 0.000 0.548 0.000
N9 -2.625 0.779 0.000
C10 -1.441 0.669 0.000

Atom - Atom Distances (Å)
  H1 H2 H3 C4 H5 C6 H7 C8 N9 C10
H11.77971.77971.09393.12312.15832.44952.65065.28284.0946
H21.77971.76531.09602.59382.15053.53613.23535.57194.4748
H31.77971.76531.09602.59382.15053.53613.23535.57194.4748
C41.09391.09601.09602.23551.50712.77592.52105.00003.8544
H53.12312.59382.59382.23551.09053.08952.10773.50902.6496
C62.15832.15052.15051.50711.09052.13701.35453.54112.4450
H72.44953.53613.53612.77593.08952.13701.08843.27052.1670
C82.65063.23533.23532.52102.10771.35451.08842.63541.4465
N95.28285.57195.57195.00003.50903.54113.27052.63541.1889
C104.09464.47484.47483.85442.64962.44502.16701.44651.1889

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 108.725 H1 C4 H3 108.725
H1 C4 C6 111.167 H2 C4 H3 107.289
H2 C4 C6 110.415 H3 C4 C6 110.415
C4 C6 H5 117.872 C4 C6 C8 123.433
H5 C6 C8 118.695 C6 C8 H7 121.659
C6 C8 C10 121.556 H7 C8 C10 116.785
C8 C10 N9 179.528
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability