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

using model chemistry: B3LYP/aug-cc-pVQZ

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/aug-cc-pVQZ
 hartrees
Energy at 0K-172.148486
Energy at 298.15K 
HF Energy-172.148486
Nuclear repulsion energy103.107107
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/aug-cc-pVQZ
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' 3113 3016 16.69 68.92 0.70 0.82
2 A' 3045 2951 18.47 83.49 0.02 0.04
3 A' 3041 2946 4.27 222.09 0.03 0.05
4 A' 2351 2278 11.47 96.14 0.15 0.26
5 A' 1508 1461 5.60 2.72 0.72 0.84
6 A' 1477 1431 5.29 8.25 0.67 0.80
7 A' 1422 1378 1.21 0.39 0.56 0.72
8 A' 1351 1309 3.30 3.34 0.41 0.58
9 A' 1095 1061 3.49 4.40 0.11 0.20
10 A' 1012 981 0.27 5.24 0.37 0.54
11 A' 839 813 0.14 5.93 0.07 0.14
12 A' 550 533 0.83 1.49 0.13 0.23
13 A' 213 206 4.51 1.97 0.70 0.83
14 A" 3118 3021 15.71 25.28 0.75 0.86
15 A" 3071 2976 0.73 83.19 0.75 0.86
16 A" 1500 1453 7.42 4.97 0.75 0.86
17 A" 1292 1252 0.00 1.98 0.75 0.86
18 A" 1117 1083 0.35 0.10 0.75 0.86
19 A" 793 768 3.30 0.39 0.75 0.86
20 A" 391 379 0.50 1.23 0.75 0.86
21 A" 219 213 1.11 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16258.7 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 15753.1 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 B3LYP/aug-cc-pVQZ
ABC
0.94158 0.15672 0.14138

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.515 0.564 0.000
C2 0.000 0.807 0.000
C3 -0.771 -0.433 0.000
N4 -1.365 -1.417 0.000
H5 2.042 1.517 0.000
H6 1.819 0.003 0.882
H7 1.819 0.003 -0.882
H8 -0.295 1.387 0.876
H9 -0.295 1.387 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53482.49423.49581.08871.08821.08822.17312.1731
C21.53481.46072.60992.16142.17582.17581.09101.0910
C32.49421.46071.14923.42252.77062.77062.07562.0756
N43.49582.60991.14924.49593.59633.59633.12673.1267
H51.08872.16143.42254.49591.76601.76602.49872.4987
H61.08822.17582.77063.59631.76601.76312.52713.0781
H71.08822.17582.77063.59631.76601.76313.07812.5271
H82.17311.09102.07563.12672.49872.52713.07811.7518
H92.17311.09102.07563.12672.49873.07812.52711.7518

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 112.717 C1 C2 H8 110.565
C1 C2 H9 110.565 C2 C1 H5 109.776
C2 C1 H6 110.953 C2 C1 H7 110.953
C2 C3 N4 179.286 C3 C2 H8 107.982
C3 C2 H9 107.982 H5 C1 H6 108.433
H5 C1 H7 108.433 H6 C1 H7 108.215
H8 C2 H9 106.802
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.796      
2 C -0.296      
3 C 0.247      
4 N -0.602      
5 H 0.319      
6 H 0.259      
7 H 0.259      
8 H 0.305      
9 H 0.305      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.367 3.412 0.000 4.153
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.596 -3.902 0.000
y -3.902 -28.058 0.000
z 0.000 0.000 -24.128
Traceless
 xyz
x -1.504 -3.902 0.000
y -3.902 -2.195 0.000
z 0.000 0.000 3.699
Polar
3z2-r27.398
x2-y20.461
xy-3.902
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.700 1.171 0.000
y 1.171 6.859 0.000
z 0.000 0.000 5.157


<r2> (average value of r2) Å2
<r2> 88.198
(<r2>)1/2 9.391