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

using model chemistry: B3LYP/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/cc-pVQZ
 hartrees
Energy at 0K-172.147802
Energy at 298.15K 
HF Energy-172.147802
Nuclear repulsion energy103.113710
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/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' 3114 3016 17.03 71.09 0.70 0.82
2 A' 3045 2950 18.68 75.98 0.02 0.05
3 A' 3041 2946 4.29 213.58 0.03 0.06
4 A' 2353 2280 9.96 81.36 0.20 0.33
5 A' 1507 1460 5.65 3.55 0.72 0.84
6 A' 1476 1430 5.27 9.27 0.67 0.80
7 A' 1422 1377 1.24 0.52 0.41 0.58
8 A' 1351 1309 3.09 3.39 0.42 0.59
9 A' 1095 1061 3.54 3.68 0.12 0.21
10 A' 1012 981 0.28 5.44 0.37 0.54
11 A' 839 813 0.12 5.38 0.09 0.17
12 A' 551 533 0.82 1.62 0.18 0.31
13 A' 213 207 4.37 2.26 0.73 0.84
14 A" 3119 3021 16.15 26.50 0.75 0.86
15 A" 3072 2976 0.80 86.24 0.75 0.86
16 A" 1499 1453 7.30 6.34 0.75 0.86
17 A" 1292 1252 0.00 2.51 0.75 0.86
18 A" 1117 1083 0.34 0.07 0.75 0.86
19 A" 793 768 3.37 0.36 0.75 0.86
20 A" 391 379 0.44 1.70 0.75 0.86
21 A" 220 213 1.07 0.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16260.1 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 15752.8 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/cc-pVQZ
ABC
0.94154 0.15675 0.14140

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.515 0.563 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 1.516 0.000
H6 1.819 0.002 0.881
H7 1.819 0.002 -0.881
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
C11.53472.49403.49541.08871.08811.08812.17292.1729
C21.53471.46072.60972.16142.17572.17571.09101.0910
C32.49401.46071.14913.42242.77032.77032.07572.0757
N43.49542.60971.14914.49563.59583.59583.12673.1267
H51.08872.16143.42244.49561.76591.76592.49872.4987
H61.08812.17572.77033.59581.76591.76302.52693.0779
H71.08812.17572.77033.59581.76591.76303.07792.5269
H82.17291.09102.07573.12672.49872.52693.07791.7518
H92.17291.09102.07573.12672.49873.07792.52691.7518

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 112.710 C1 C2 H8 110.558
C1 C2 H9 110.558 C2 C1 H5 109.787
C2 C1 H6 110.950 C2 C1 H7 110.950
C2 C3 N4 179.282 C3 C2 H8 107.995
C3 C2 H9 107.995 H5 C1 H6 108.432
H5 C1 H7 108.432 H6 C1 H7 108.210
H8 C2 H9 106.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.236      
2 C -0.101      
3 C 0.009      
4 N -0.219      
5 H 0.096      
6 H 0.099      
7 H 0.099      
8 H 0.126      
9 H 0.126      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.347 3.384 0.000 4.118
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.523 -3.861 0.000
y -3.861 -27.959 0.000
z 0.000 0.000 -24.081
Traceless
 xyz
x -1.503 -3.861 0.000
y -3.861 -2.157 0.000
z 0.000 0.000 3.660
Polar
3z2-r27.320
x2-y20.436
xy-3.861
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.436 1.193 0.000
y 1.193 6.647 0.000
z 0.000 0.000 4.903


<r2> (average value of r2) Å2
<r2> 88.142
(<r2>)1/2 9.388