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

using model chemistry: B3LYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-172.131610
Energy at 298.15K 
HF Energy-172.131610
Nuclear repulsion energy103.066470
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 B3LYP/6-311+G(3df,2p)
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' 3111 3008 16.92 70.19 0.70 0.82
2 A' 3042 2942 18.18 89.35 0.02 0.03
3 A' 3038 2937 4.11 190.97 0.03 0.06
4 A' 2352 2274 11.47 92.73 0.17 0.29
5 A' 1508 1458 5.82 2.81 0.71 0.83
6 A' 1477 1428 5.64 8.01 0.69 0.82
7 A' 1421 1374 1.27 0.54 0.43 0.60
8 A' 1348 1304 3.27 3.39 0.42 0.59
9 A' 1092 1056 3.59 4.33 0.11 0.19
10 A' 1011 977 0.29 5.45 0.37 0.54
11 A' 838 811 0.13 5.76 0.08 0.15
12 A' 551 532 0.82 1.56 0.15 0.27
13 A' 214 207 4.49 2.14 0.71 0.83
14 A" 3116 3013 15.71 25.30 0.75 0.86
15 A" 3068 2967 0.72 83.21 0.75 0.86
16 A" 1501 1451 7.73 5.19 0.75 0.86
17 A" 1289 1247 0.00 2.13 0.75 0.86
18 A" 1115 1078 0.33 0.08 0.75 0.86
19 A" 791 765 3.22 0.42 0.75 0.86
20 A" 392 379 0.49 1.49 0.75 0.86
21 A" 220 213 1.10 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16246.8 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 15710.7 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 B3LYP/6-311+G(3df,2p)
ABC
0.94029 0.15666 0.14130

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.516 0.563 0.000
C2 0.000 0.808 0.000
C3 -0.771 -0.433 0.000
N4 -1.366 -1.417 0.000
H5 2.043 1.516 0.000
H6 1.820 0.002 0.882
H7 1.820 0.002 -0.882
H8 -0.295 1.388 0.877
H9 -0.295 1.388 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53552.49433.49651.08941.08881.08882.17442.1744
C21.53551.46072.61062.16262.17712.17711.09181.0918
C32.49431.46071.14993.42342.77122.77122.07622.0762
N43.49652.61061.14994.49753.59733.59733.12783.1278
H51.08942.16263.42344.49751.76681.76682.50052.5005
H61.08882.17712.77123.59731.76681.76412.52873.0801
H71.08882.17712.77123.59731.76681.76413.08012.5287
H82.17441.09182.07623.12782.50052.52873.08011.7530
H92.17441.09182.07623.12782.50053.08012.52871.7530

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 112.686 C1 C2 H8 110.575
C1 C2 H9 110.575 C2 C1 H5 109.787
C2 C1 H6 110.965 C2 C1 H7 110.965
C2 C3 N4 179.305 C3 C2 H8 107.987
C3 C2 H9 107.987 H5 C1 H6 108.416
H5 C1 H7 108.416 H6 C1 H7 108.211
H8 C2 H9 106.805
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.514      
2 C -0.125      
3 C 0.736      
4 N -0.946      
5 H 0.151      
6 H 0.169      
7 H 0.169      
8 H 0.180      
9 H 0.180      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.374 3.424 0.000 4.166
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.600 -3.918 0.000
y -3.918 -28.070 0.000
z 0.000 0.000 -24.170
Traceless
 xyz
x -1.480 -3.918 0.000
y -3.918 -2.185 0.000
z 0.000 0.000 3.665
Polar
3z2-r27.330
x2-y20.470
xy-3.918
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.602 1.202 0.000
y 1.202 6.788 0.000
z 0.000 0.000 5.049


<r2> (average value of r2) Å2
<r2> 88.252
(<r2>)1/2 9.394