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

using model chemistry: CID/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/cc-pVDZ
 hartrees
Energy at 0K-171.486288
Energy at 298.15K 
HF Energy-170.975266
Nuclear repulsion energy102.670189
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/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' 3247 3000 17.79      
2 A' 3174 2932 6.52      
3 A' 3155 2915 18.30      
4 A' 2467 2280 4.49      
5 A' 1543 1426 4.68      
6 A' 1517 1401 3.79      
7 A' 1466 1355 0.58      
8 A' 1404 1298 5.34      
9 A' 1137 1051 2.88      
10 A' 1070 989 1.36      
11 A' 875 809 1.08      
12 A' 563 521 0.72      
13 A' 221 204 4.15      
14 A" 3252 3005 17.25      
15 A" 3221 2976 0.61      
16 A" 1535 1418 6.51      
17 A" 1332 1230 0.00      
18 A" 1152 1065 0.50      
19 A" 813 751 2.74      
20 A" 408 377 0.40      
21 A" 236 218 0.92      

Unscaled Zero Point Vibrational Energy (zpe) 16893.4 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 15609.5 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/cc-pVDZ
ABC
0.93016 0.15584 0.14051

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.571 0.000
C2 0.000 0.818 0.000
C3 -0.770 -0.440 0.000
N4 -1.361 -1.432 0.000
H5 2.044 1.529 0.000
H6 1.815 0.005 0.888
H7 1.815 0.005 -0.888
H8 -0.301 1.395 0.883
H9 -0.301 1.395 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53192.49533.50231.09621.09621.09622.17802.1780
C21.53191.47412.62952.16452.17792.17791.09691.0969
C32.49531.47411.15553.43432.76882.76882.08952.0895
N43.50232.62951.15554.51283.59723.59723.14633.1463
H51.09622.16453.43434.51281.77921.77922.50912.5091
H61.09622.17792.76883.59721.77921.77692.53153.0895
H71.09622.17792.76883.59721.77921.77693.08952.5315
H82.17801.09692.08953.14632.50912.53153.08951.7654
H92.17801.09692.08953.14632.50913.08952.53151.7654

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 112.209 C1 C2 H8 110.810
C1 C2 H9 110.810 C2 C1 H5 109.790
C2 C1 H6 110.847 C2 C1 H7 110.847
C2 C3 N4 179.304 C3 C2 H8 107.823
C3 C2 H9 107.823 H5 C1 H6 108.498
H5 C1 H7 108.498 H6 C1 H7 108.288
H8 C2 H9 107.163
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability