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

using model chemistry: CID/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at CID/daug-cc-pVDZ
 hartrees
Energy at 0K-171.510499
Energy at 298.15K 
HF Energy-170.982994
Nuclear repulsion energy102.682046
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 CID/daug-cc-pVDZ
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' 3225 3225 20.49      
2 A' 3157 3157 6.45      
3 A' 3139 3139 16.93      
4 A' 2445 2445 7.00      
5 A' 1540 1540 4.36      
6 A' 1511 1511 4.11      
7 A' 1458 1458 0.94      
8 A' 1393 1393 5.22      
9 A' 1131 1131 3.03      
10 A' 1062 1062 1.18      
11 A' 868 868 1.03      
12 A' 562 562 0.71      
13 A' 219 219 5.03      
14 A" 3230 3230 19.84      
15 A" 3202 3202 0.13      
16 A" 1533 1533 6.43      
17 A" 1326 1326 0.02      
18 A" 1149 1149 0.39      
19 A" 805 805 2.28      
20 A" 402 402 0.78      
21 A" 228 228 1.23      

Unscaled Zero Point Vibrational Energy (zpe) 16791.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16791.1 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 CID/daug-cc-pVDZ
ABC
0.92930 0.15583 0.14047

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.513 0.569 0.000
C2 0.000 0.819 0.000
C3 -0.771 -0.439 0.000
N4 -1.362 -1.432 0.000
H5 2.043 1.526 0.000
H6 1.815 0.005 0.887
H7 1.815 0.005 -0.887
H8 -0.299 1.394 0.882
H9 -0.299 1.394 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53392.49653.50281.09391.09361.09362.17742.1774
C21.53391.47502.63042.16232.17762.17761.09441.0944
C32.49651.47501.15553.43212.76882.76882.08782.0878
N43.50282.63041.15554.51043.59713.59713.14503.1450
H51.09392.16233.43214.51041.77591.77592.50602.5060
H61.09362.17762.76883.59711.77591.77392.52873.0861
H71.09362.17762.76883.59711.77591.77393.08612.5287
H82.17741.09442.08783.14502.50602.52873.08611.7642
H92.17741.09442.08783.14502.50603.08612.52871.7642

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 112.125 C1 C2 H8 110.772
C1 C2 H9 110.772 C2 C1 H5 109.608
C2 C1 H6 110.837 C2 C1 H7 110.837
C2 C3 N4 179.278 C3 C2 H8 107.779
C3 C2 H9 107.779 H5 C1 H6 108.548
H5 C1 H7 108.548 H6 C1 H7 108.397
H8 C2 H9 107.425
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability