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

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K0.025597
HF Energy0.025597
Nuclear repulsion energy70.935364
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 PM6
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' 2788 2962 29.17      
2 A' 2733 2903 68.13      
3 A' 2693 2861 53.34      
4 A' 2364 2511 60.52      
5 A' 1339 1422 72.19      
6 A' 1301 1383 3.98      
7 A' 1254 1333 19.08      
8 A' 1251 1329 60.31      
9 A' 1158 1230 9.42      
10 A' 1103 1172 30.85      
11 A' 932 991 14.33      
12 A' 591 628 3.35      
13 A' 233 248 2.45      
14 A" 2694 2862 117.36      
15 A" 2655 2820 37.98      
16 A" 1253 1331 41.91      
17 A" 1143 1215 3.76      
18 A" 1068 1135 1.63      
19 A" 838 891 45.49      
20 A" 421 447 0.02      
21 A" 142 151 0.44      

Unscaled Zero Point Vibrational Energy (zpe) 14976.6 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 15911.1 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 PM6
ABC
0.91972 0.15853 0.14247

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.503 0.542 0.000
C2 0.000 0.815 0.000
C3 -0.763 -0.424 0.000
N4 -1.367 -1.409 0.000
H5 2.073 1.479 0.000
H6 1.811 -0.032 0.884
H7 1.811 -0.032 -0.884
H8 -0.281 1.427 0.890
H9 -0.281 1.427 -0.890

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52712.46283.47041.09691.09811.09812.18072.1807
C21.52711.45502.61062.17712.18572.18571.11591.1159
C32.46281.45501.15563.41542.74912.74912.10952.1095
N43.47042.61061.15564.49213.57473.57473.16433.1643
H51.09692.17713.41544.49211.76991.76992.51762.5176
H61.09812.18572.74913.57471.76991.76742.55043.1064
H71.09812.18572.74913.57471.76991.76743.10642.5504
H82.18071.11592.10953.16432.51762.55043.10641.7797
H92.18071.11592.10953.16432.51763.10642.55041.7797

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 111.329 C1 C2 H8 110.227
C1 C2 H9 110.227 C2 C1 H5 111.080
C2 C1 H6 111.693 C2 C1 H7 111.693
C2 C3 N4 179.946 C3 C2 H8 109.567
C3 C2 H9 109.567 H5 C1 H6 107.485
H5 C1 H7 107.485 H6 C1 H7 107.172
H8 C2 H9 105.771
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability