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

using model chemistry: B2PLYP=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-171.970036
Energy at 298.15K 
HF Energy-171.750475
Nuclear repulsion energy102.967252
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/TZVP
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' 3154 3009 18.72 70.83 0.70 0.83
2 A' 3081 2940 8.45 86.54 0.10 0.18
3 A' 3075 2935 15.80 179.36 0.01 0.02
4 A' 2302 2197 2.96 64.52 0.21 0.35
5 A' 1523 1454 6.18 5.57 0.75 0.86
6 A' 1494 1426 5.77 12.34 0.74 0.85
7 A' 1439 1373 1.46 1.21 0.24 0.39
8 A' 1370 1307 2.95 2.87 0.60 0.75
9 A' 1108 1057 3.70 2.69 0.14 0.24
10 A' 1026 979 0.45 6.68 0.41 0.58
11 A' 846 808 0.24 5.22 0.13 0.23
12 A' 546 521 0.88 2.27 0.28 0.44
13 A' 211 202 3.87 3.22 0.74 0.85
14 A" 3159 3015 17.95 23.80 0.75 0.86
15 A" 3119 2976 0.73 92.18 0.75 0.86
16 A" 1517 1448 7.99 10.13 0.75 0.86
17 A" 1304 1245 0.02 5.45 0.75 0.86
18 A" 1130 1079 0.45 0.16 0.75 0.86
19 A" 801 764 2.44 0.26 0.75 0.86
20 A" 386 368 0.18 3.07 0.75 0.86
21 A" 226 216 0.94 0.88 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16409.6 cm-1
Scaled (by 0.9542) Zero Point Vibrational Energy (zpe) 15658.0 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 B2PLYP=FULL/TZVP
ABC
0.93693 0.15665 0.14123

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.564 0.000
C2 0.000 0.812 0.000
C3 -0.768 -0.431 0.000
N4 -1.364 -1.424 0.000
H5 2.042 1.516 0.000
H6 1.813 0.002 0.882
H7 1.813 0.002 -0.882
H8 -0.294 1.390 0.877
H9 -0.294 1.390 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53262.48863.49661.08891.08841.08842.17122.1712
C21.53261.46152.61942.15992.17292.17291.09061.0906
C32.48861.46151.15803.41892.76232.76232.07602.0760
N43.49662.61941.15804.49923.59233.59233.13563.1356
H51.08892.15993.41894.49921.76681.76682.49862.4986
H61.08842.17292.76233.59231.76681.76412.52313.0758
H71.08842.17292.76233.59231.76681.76413.07582.5231
H82.17121.09062.07603.13562.49862.52313.07581.7543
H92.17121.09062.07603.13562.49863.07582.52311.7543

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 112.417 C1 C2 H8 110.592
C1 C2 H9 110.592 C2 C1 H5 109.799
C2 C1 H6 110.868 C2 C1 H7 110.868
C2 C3 N4 179.209 C3 C2 H8 107.981
C3 C2 H9 107.981 H5 C1 H6 108.478
H5 C1 H7 108.478 H6 C1 H7 108.277
H8 C2 H9 107.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability