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

using model chemistry: wB97X-D/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 wB97X-D/6-311G**
 hartrees
Energy at 0K-172.051441
Energy at 298.15K 
HF Energy-172.051441
Nuclear repulsion energy103.100228
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 wB97X-D/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' 3147 3010 18.58 75.68 0.70 0.82
2 A' 3072 2939 7.54 102.87 0.08 0.15
3 A' 3063 2929 17.44 136.77 0.01 0.01
4 A' 2397 2292 9.45 62.18 0.26 0.41
5 A' 1510 1445 7.18 6.99 0.74 0.85
6 A' 1480 1416 6.43 12.07 0.74 0.85
7 A' 1425 1363 2.44 1.82 0.28 0.43
8 A' 1359 1300 2.95 2.90 0.55 0.71
9 A' 1102 1055 4.43 3.11 0.16 0.28
10 A' 1033 988 0.78 5.40 0.44 0.61
11 A' 851 814 0.18 4.89 0.14 0.24
12 A' 559 535 0.96 2.04 0.36 0.53
13 A' 216 206 4.12 2.95 0.73 0.84
14 A" 3150 3013 18.44 23.47 0.75 0.86
15 A" 3113 2978 0.57 98.68 0.75 0.86
16 A" 1503 1438 9.12 11.46 0.75 0.86
17 A" 1297 1241 0.02 5.13 0.75 0.86
18 A" 1121 1072 0.50 0.03 0.75 0.86
19 A" 798 764 4.10 0.40 0.75 0.86
20 A" 400 382 0.23 3.22 0.75 0.86
21 A" 222 213 0.86 0.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16409.5 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 15695.7 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 wB97X-D/6-311G**
ABC
0.93685 0.15715 0.14167

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.561 0.000
C2 0.000 0.810 0.000
C3 -0.769 -0.432 0.000
N4 -1.362 -1.418 0.000
H5 2.043 1.515 0.000
H6 1.813 -0.002 0.884
H7 1.813 -0.002 -0.884
H8 -0.296 1.389 0.879
H9 -0.296 1.389 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53252.48863.48961.09141.09121.09122.17432.1743
C21.53251.46182.61142.16152.17512.17511.09321.0932
C32.48861.46181.14973.42122.76382.76382.07702.0770
N43.48962.61141.14974.49413.58733.58733.12813.1281
H51.09142.16153.42124.49411.77101.77102.50262.5026
H61.09122.17512.76383.58731.77101.76872.52713.0815
H71.09122.17512.76383.58731.77101.76873.08152.5271
H82.17431.09322.07703.12812.50262.52713.08151.7580
H92.17431.09322.07703.12812.50263.08152.52711.7580

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 112.407 C1 C2 H8 110.694
C1 C2 H9 110.694 C2 C1 H5 109.780
C2 C1 H6 110.880 C2 C1 H7 110.880
C2 C3 N4 179.267 C3 C2 H8 107.894
C3 C2 H9 107.894 H5 C1 H6 108.470
H5 C1 H7 108.470 H6 C1 H7 108.288
H8 C2 H9 107.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.325      
2 C -0.235      
3 C 0.053      
4 N -0.246      
5 H 0.132      
6 H 0.141      
7 H 0.141      
8 H 0.170      
9 H 0.170      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.286 3.320 0.000 4.031
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.108 -3.747 0.000
y -3.747 -27.494 0.000
z 0.000 0.000 -23.774
Traceless
 xyz
x -1.474 -3.747 0.000
y -3.747 -2.053 0.000
z 0.000 0.000 3.527
Polar
3z2-r27.055
x2-y20.386
xy-3.747
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.602 1.164 0.000
y 1.164 6.026 0.000
z 0.000 0.000 4.264


<r2> (average value of r2) Å2
<r2> 87.787
(<r2>)1/2 9.369