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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-311G*
 hartrees
Energy at 0K-172.110863
Energy at 298.15K 
HF Energy-172.110863
Nuclear repulsion energy102.867280
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 B3LYPultrafine/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' 3118 3013 25.06 79.60 0.71 0.83
2 A' 3050 2947 24.81 53.65 0.04 0.07
3 A' 3047 2945 6.24 181.86 0.05 0.09
4 A' 2360 2280 7.74 66.66 0.25 0.41
5 A' 1523 1472 7.50 7.13 0.74 0.85
6 A' 1491 1441 5.71 14.09 0.72 0.84
7 A' 1431 1382 2.20 1.88 0.33 0.49
8 A' 1361 1315 2.79 4.69 0.55 0.71
9 A' 1100 1063 4.48 2.62 0.15 0.26
10 A' 1017 982 0.49 5.96 0.43 0.60
11 A' 842 813 0.23 4.66 0.15 0.26
12 A' 555 536 0.95 2.03 0.31 0.48
13 A' 216 209 3.99 2.89 0.73 0.84
14 A" 3125 3019 25.42 29.94 0.75 0.86
15 A" 3077 2974 2.30 100.93 0.75 0.86
16 A" 1516 1465 9.12 12.63 0.75 0.86
17 A" 1304 1260 0.04 5.82 0.75 0.86
18 A" 1126 1088 0.26 0.05 0.75 0.86
19 A" 796 769 3.79 0.38 0.75 0.86
20 A" 398 384 0.22 3.05 0.75 0.86
21 A" 225 217 0.88 0.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16337.9 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 15787.4 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 B3LYPultrafine/6-311G*
ABC
0.93700 0.15608 0.14077

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.518 0.564 0.000
C2 0.000 0.808 0.000
C3 -0.773 -0.434 0.000
N4 -1.369 -1.420 0.000
H5 2.048 1.518 0.000
H6 1.825 0.002 0.883
H7 1.825 0.002 -0.883
H8 -0.294 1.393 0.877
H9 -0.294 1.393 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53742.49813.50261.09211.09141.09142.17712.1771
C21.53741.46282.61532.16802.18252.18251.09431.0943
C32.49811.46281.15263.43052.77832.77832.08222.0822
N43.50262.61531.15264.50693.60613.60613.13673.1367
H51.09212.16803.43054.50691.76941.76942.50452.5045
H61.09142.18252.77833.60611.76941.76692.53543.0867
H71.09142.18252.77833.60611.76941.76693.08672.5354
H82.17711.09432.08223.13672.50452.53543.08671.7540
H92.17711.09432.08223.13672.50453.08672.53541.7540

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 112.726 C1 C2 H8 110.509
C1 C2 H9 110.509 C2 C1 H5 109.916
C2 C1 H6 111.107 C2 C1 H7 111.107
C2 C3 N4 179.264 C3 C2 H8 108.168
C3 C2 H9 108.168 H5 C1 H6 108.259
H5 C1 H7 108.259 H6 C1 H7 108.094
H8 C2 H9 106.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.614      
2 C -0.447      
3 C 0.105      
4 N -0.232      
5 H 0.222      
6 H 0.230      
7 H 0.230      
8 H 0.253      
9 H 0.253      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.234 3.260 0.000 3.952
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.426 -3.728 0.000
y -3.728 -27.722 0.000
z 0.000 0.000 -23.987
Traceless
 xyz
x -1.572 -3.728 0.000
y -3.728 -2.016 0.000
z 0.000 0.000 3.587
Polar
3z2-r27.175
x2-y20.296
xy-3.728
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.614 1.187 0.000
y 1.187 6.027 0.000
z 0.000 0.000 4.238


<r2> (average value of r2) Å2
<r2> 88.387
(<r2>)1/2 9.401