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

using model chemistry: B2PLYP/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B2PLYP/aug-cc-pVTZ
 hartrees
Energy at 0K-171.986394
Energy at 298.15K 
HF Energy-171.755429
Nuclear repulsion energy103.009023
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 B2PLYP/aug-cc-pVTZ
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' 3144 3021 15.89 65.99 0.70 0.82
2 A' 3072 2952 8.62 65.05 0.11 0.19
3 A' 3067 2948 13.04 235.07 0.00 0.01
4 A' 2286 2197 4.29 82.24 0.15 0.27
5 A' 1520 1461 5.11 2.60 0.73 0.84
6 A' 1489 1431 5.07 7.83 0.69 0.82
7 A' 1430 1374 1.18 0.48 0.43 0.60
8 A' 1359 1306 3.53 2.77 0.39 0.56
9 A' 1102 1059 3.34 5.02 0.11 0.20
10 A' 1024 984 0.34 4.96 0.39 0.56
11 A' 844 811 0.17 6.45 0.07 0.12
12 A' 544 523 0.71 1.40 0.14 0.24
13 A' 210 202 4.38 1.93 0.71 0.83
14 A" 3148 3026 14.76 21.63 0.75 0.86
15 A" 3107 2986 0.43 81.60 0.75 0.86
16 A" 1513 1454 7.23 4.89 0.75 0.86
17 A" 1302 1252 0.00 1.90 0.75 0.86
18 A" 1125 1081 0.42 0.10 0.75 0.86
19 A" 795 764 2.86 0.36 0.75 0.86
20 A" 385 370 0.44 1.20 0.75 0.86
21 A" 222 213 1.11 0.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16345.8 cm-1
Scaled (by 0.961) Zero Point Vibrational Energy (zpe) 15708.3 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 B2PLYP/aug-cc-pVTZ
ABC
0.93643 0.15685 0.14137

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.563 0.000
C2 0.000 0.813 0.000
C3 -0.768 -0.431 0.000
N4 -1.363 -1.424 0.000
H5 2.042 1.513 0.000
H6 1.811 0.001 0.881
H7 1.811 0.001 -0.881
H8 -0.294 1.390 0.876
H9 -0.294 1.390 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53212.48683.49431.08801.08751.08752.17072.1707
C21.53211.46152.61912.15892.17162.17161.08991.0899
C32.48681.46151.15763.41682.75922.75922.07582.0758
N43.49432.61911.15764.49653.58863.58863.13533.1353
H51.08802.15893.41684.49651.76571.76572.49802.4980
H61.08752.17162.75923.58861.76571.76262.52223.0742
H71.08752.17162.75923.58861.76571.76263.07422.5222
H82.17071.08992.07583.13532.49802.52223.07421.7526
H92.17071.08992.07583.13532.49803.07422.52221.7526

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 112.319 C1 C2 H8 110.633
C1 C2 H9 110.633 C2 C1 H5 109.804
C2 C1 H6 110.843 C2 C1 H7 110.843
C2 C3 N4 179.227 C3 C2 H8 108.012
C3 C2 H9 108.012 H5 C1 H6 108.509
H5 C1 H7 108.509 H6 C1 H7 108.261
H8 C2 H9 107.034
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.787      
2 C -0.108      
3 C 0.117      
4 N -0.462      
5 H 0.247      
6 H 0.255      
7 H 0.255      
8 H 0.241      
9 H 0.241      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.330 3.383 0.000 4.108
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.628 -3.861 -0.006
y -3.861 -28.111 -0.003
z -0.006 -0.003 -24.174
Traceless
 xyz
x -1.485 -3.861 -0.006
y -3.861 -2.211 -0.003
z -0.006 -0.003 3.696
Polar
3z2-r27.392
x2-y20.484
xy-3.861
xz-0.006
yz-0.003


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.606 1.141 0.000
y 1.141 6.780 -0.000
z 0.000 -0.000 5.106


<r2> (average value of r2) Å2
<r2> 88.203
(<r2>)1/2 9.392