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All results from a given calculation for C2H5CN (ethyl cyanide)

using model chemistry: B2PLYP=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B2PLYP=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-172.003120
Energy at 298.15K 
HF Energy-171.750998
Nuclear repulsion energy103.077647
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 B2PLYP=FULL/6-311+G(3df,2p)
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' 3146 3146 15.89 66.85 0.70 0.82
2 A' 3071 3071 9.99 37.50 0.18 0.30
3 A' 3069 3069 11.10 236.97 0.01 0.01
4 A' 2292 2292 4.36 79.14 0.16 0.28
5 A' 1522 1522 5.50 2.69 0.72 0.84
6 A' 1491 1491 5.46 7.63 0.71 0.83
7 A' 1431 1431 1.31 0.65 0.34 0.51
8 A' 1360 1360 3.43 2.80 0.40 0.57
9 A' 1102 1102 3.47 4.99 0.11 0.19
10 A' 1026 1026 0.37 4.96 0.40 0.57
11 A' 846 846 0.15 6.18 0.07 0.13
12 A' 547 547 0.71 1.43 0.16 0.28
13 A' 212 212 4.37 2.05 0.71 0.83
14 A" 3151 3151 14.53 22.45 0.75 0.86
15 A" 3108 3108 0.47 80.70 0.75 0.86
16 A" 1515 1515 7.64 5.10 0.75 0.86
17 A" 1300 1300 0.00 2.04 0.75 0.86
18 A" 1123 1123 0.38 0.08 0.75 0.86
19 A" 795 795 2.87 0.38 0.75 0.86
20 A" 388 388 0.43 1.40 0.75 0.86
21 A" 225 225 1.10 0.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16358.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16358.3 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 B2PLYP=FULL/6-311+G(3df,2p)
ABC
0.93697 0.15712 0.14158

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.511 0.562 0.000
C2 0.000 0.812 0.000
C3 -0.767 -0.430 0.000
N4 -1.362 -1.422 0.000
H5 2.042 1.511 0.000
H6 1.810 -0.001 0.881
H7 1.810 -0.001 -0.881
H8 -0.294 1.390 0.876
H9 -0.294 1.390 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53142.48483.49131.08751.08711.08712.17022.1702
C21.53141.46032.61672.15842.17102.17101.08961.0896
C32.48481.46031.15653.41482.75772.75772.07472.0747
N43.49132.61671.15654.49343.58623.58623.13313.1331
H51.08752.15843.41484.49341.76451.76452.49782.4978
H61.08712.17102.75773.58621.76451.76172.52213.0736
H71.08712.17102.75773.58621.76451.76173.07362.5221
H82.17021.08962.07473.13312.49782.52213.07361.7517
H92.17021.08962.07473.13312.49783.07362.52211.7517

picture of ethyl cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 112.294 C1 C2 H8 110.654
C1 C2 H9 110.654 C2 C1 H5 109.843
C2 C1 H6 110.876 C2 C1 H7 110.876
C2 C3 N4 179.240 C3 C2 H8 108.025
C3 C2 H9 108.025 H5 C1 H6 108.465
H5 C1 H7 108.465 H6 C1 H7 108.241
H8 C2 H9 106.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability