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

using model chemistry: B2PLYP=FULL/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-172.008239
Energy at 298.15K 
HF Energy-171.755762
Nuclear repulsion energy103.124106
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/daug-cc-pVTZ
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' 3144 3144 15.79 65.77 0.69 0.82
2 A' 3075 3075 10.72 33.68 0.21 0.34
3 A' 3072 3072 10.77 266.36 0.01 0.01
4 A' 2293 2293 4.43 82.49 0.15 0.26
5 A' 1522 1522 5.17 2.63 0.73 0.84
6 A' 1491 1491 5.17 7.75 0.69 0.82
7 A' 1430 1430 1.25 0.48 0.42 0.59
8 A' 1362 1362 3.45 2.78 0.40 0.57
9 A' 1104 1104 3.38 4.99 0.11 0.20
10 A' 1027 1027 0.33 4.83 0.40 0.57
11 A' 846 846 0.16 6.40 0.07 0.12
12 A' 544 544 0.70 1.33 0.14 0.24
13 A' 210 210 4.37 1.89 0.70 0.83
14 A" 3149 3149 14.60 21.27 0.75 0.86
15 A" 3108 3108 0.39 81.64 0.75 0.86
16 A" 1515 1515 7.28 4.88 0.75 0.86
17 A" 1305 1305 0.00 1.89 0.75 0.86
18 A" 1127 1127 0.41 0.09 0.75 0.86
19 A" 795 795 2.89 0.36 0.75 0.86
20 A" 386 386 0.45 1.15 0.75 0.86
21 A" 221 221 1.11 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16361.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16361.4 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 B2PLYP=FULL/daug-cc-pVTZ
ABC
0.93797 0.15726 0.14172

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.510 0.562 0.000
C2 0.000 0.812 0.000
C3 -0.767 -0.430 0.000
N4 -1.361 -1.422 0.000
H5 2.040 1.511 0.000
H6 1.809 -0.000 0.881
H7 1.809 -0.000 -0.881
H8 -0.293 1.390 0.876
H9 -0.293 1.390 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53042.48373.48961.08731.08681.08682.16802.1680
C21.53041.45962.61582.15652.16952.16951.08911.0891
C32.48371.45961.15633.41292.75612.75612.07412.0741
N43.48962.61581.15634.49113.58393.58393.13263.1326
H51.08732.15653.41294.49111.76461.76462.49442.4944
H61.08682.16952.75613.58391.76461.76162.51933.0712
H71.08682.16952.75613.58391.76461.76163.07122.5193
H82.16801.08912.07413.13262.49442.51933.07121.7514
H92.16801.08912.07413.13262.49443.07122.51931.7514

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 112.319 C1 C2 H8 110.587
C1 C2 H9 110.587 C2 C1 H5 109.782
C2 C1 H6 110.842 C2 C1 H7 110.842
C2 C3 N4 179.177 C3 C2 H8 108.058
C3 C2 H9 108.058 H5 C1 H6 108.513
H5 C1 H7 108.513 H6 C1 H7 108.278
H8 C2 H9 107.038
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability