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

using model chemistry: BLYP/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at BLYP/6-311G**
 hartrees
Energy at 0K-172.043067
Energy at 298.15K 
HF Energy-172.043067
Nuclear repulsion energy102.093111
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 BLYP/6-311G**
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' 3038 3027 22.73 83.30 0.71 0.83
2 A' 2973 2962 21.92 107.27 0.01 0.02
3 A' 2960 2948 7.87 152.83 0.06 0.11
4 A' 2259 2250 5.87 72.76 0.26 0.41
5 A' 1473 1467 5.89 7.30 0.74 0.85
6 A' 1439 1433 5.04 14.07 0.71 0.83
7 A' 1381 1376 1.11 1.45 0.43 0.60
8 A' 1309 1304 2.62 5.29 0.55 0.71
9 A' 1061 1057 3.55 2.24 0.14 0.24
10 A' 976 972 0.19 6.19 0.39 0.57
11 A' 813 810 0.04 4.97 0.15 0.26
12 A' 534 532 0.95 1.95 0.26 0.42
13 A' 209 208 3.42 2.95 0.73 0.85
14 A" 3044 3032 22.83 35.23 0.75 0.86
15 A" 2986 2975 2.91 100.01 0.75 0.86
16 A" 1464 1458 7.45 11.93 0.75 0.86
17 A" 1256 1252 0.02 5.49 0.75 0.86
18 A" 1085 1081 0.37 0.10 0.75 0.86
19 A" 773 770 3.35 0.37 0.75 0.86
20 A" 381 380 0.08 2.82 0.75 0.86
21 A" 215 214 0.78 0.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15814.3 cm-1
Scaled (by 0.9961) Zero Point Vibrational Energy (zpe) 15752.7 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 BLYP/6-311G**
ABC
0.92603 0.15355 0.13857

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.532 0.568 0.000
C2 0.000 0.811 0.000
C3 -0.779 -0.434 0.000
N4 -1.382 -1.431 0.000
H5 2.060 1.531 0.000
H6 1.840 0.003 0.889
H7 1.840 0.003 -0.889
H8 -0.294 1.401 0.883
H9 -0.294 1.401 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.55132.51903.53361.09831.09771.09772.19252.1925
C21.55131.46892.63362.18242.19762.19761.10131.1013
C32.51901.46891.16473.45292.80002.80002.09282.0928
N43.53362.63361.16474.54103.63693.63693.15873.1587
H51.09832.18243.45294.54101.78161.78162.51772.5177
H61.09772.19762.80003.63691.78161.77882.55063.1059
H71.09772.19762.80003.63691.78161.77883.10592.5506
H82.19251.10132.09283.15872.51772.55063.10591.7656
H92.19251.10132.09283.15872.51773.10592.55061.7656

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 113.000 C1 C2 H8 110.337
C1 C2 H9 110.337 C2 C1 H5 109.719
C2 C1 H6 110.953 C2 C1 H7 110.953
C2 C3 N4 179.165 C3 C2 H8 108.178
C3 C2 H9 108.178 H5 C1 H6 108.448
H5 C1 H7 108.448 H6 C1 H7 108.244
H8 C2 H9 106.571
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.287      
2 C -0.194      
3 C 0.009      
4 N -0.195      
5 H 0.115      
6 H 0.126      
7 H 0.126      
8 H 0.150      
9 H 0.150      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.215 3.196 0.000 3.889
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.425 -3.678 0.000
y -3.678 -27.782 0.000
z 0.000 0.000 -24.140
Traceless
 xyz
x -1.464 -3.678 0.000
y -3.678 -2.000 0.000
z 0.000 0.000 3.464
Polar
3z2-r26.927
x2-y20.357
xy-3.678
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.937 1.280 0.000
y 1.280 6.302 0.000
z 0.000 0.000 4.407


<r2> (average value of r2) Å2
<r2> 89.550
(<r2>)1/2 9.463