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

using model chemistry: B1B95/daug-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 B1B95/daug-cc-pVTZ
 hartrees
Energy at 0K-172.041260
Energy at 298.15K 
HF Energy-172.041260
Nuclear repulsion energy103.525004
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 B1B95/daug-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' 3155 3155 14.44 68.11 0.69 0.82
2 A' 3077 3077 16.32 22.55 0.16 0.28
3 A' 3074 3074 4.39 280.78 0.01 0.03
4 A' 2385 2385 12.53 92.54 0.15 0.26
5 A' 1505 1505 5.72 2.87 0.73 0.84
6 A' 1470 1470 5.87 7.93 0.67 0.80
7 A' 1414 1414 1.49 0.48 0.51 0.67
8 A' 1347 1347 3.17 2.85 0.43 0.60
9 A' 1096 1096 3.58 5.48 0.12 0.21
10 A' 1034 1034 0.43 3.58 0.45 0.62
11 A' 853 853 0.07 5.90 0.07 0.13
12 A' 552 552 0.83 1.34 0.16 0.27
13 A' 211 211 4.41 1.92 0.70 0.82
14 A" 3158 3158 13.26 24.42 0.75 0.86
15 A" 3112 3112 0.36 81.78 0.75 0.86
16 A" 1497 1497 7.77 5.09 0.75 0.86
17 A" 1289 1289 0.00 1.95 0.75 0.86
18 A" 1111 1111 0.39 0.10 0.75 0.86
19 A" 785 785 3.69 0.38 0.75 0.86
20 A" 396 396 0.43 1.21 0.75 0.86
21 A" 219 219 1.07 0.29 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16369.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16369.4 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 B1B95/daug-cc-pVTZ
ABC
0.94632 0.15843 0.14284

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.505 0.561 0.000
C2 0.000 0.806 0.000
C3 -0.765 -0.430 0.000
N4 -1.356 -1.414 0.000
H5 2.032 1.511 0.000
H6 1.806 0.000 0.880
H7 1.806 0.000 -0.880
H8 -0.296 1.384 0.875
H9 -0.296 1.384 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52452.47693.47611.08661.08621.08622.16452.1645
C21.52451.45402.60122.15102.16482.16481.08911.0891
C32.47691.45401.14733.40502.75182.75182.06762.0676
N43.47612.60121.14734.47593.57403.57403.11673.1167
H51.08662.15103.40504.47591.76291.76292.49062.4906
H61.08622.16482.75183.57401.76291.75972.51703.0681
H71.08622.16482.75183.57401.76291.75973.06812.5170
H82.16451.08912.06763.11672.49062.51703.06811.7490
H92.16451.08912.06763.11672.49063.06812.51701.7490

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 112.510 C1 C2 H8 110.716
C1 C2 H9 110.716 C2 C1 H5 109.800
C2 C1 H6 110.924 C2 C1 H7 110.924
C2 C3 N4 179.228 C3 C2 H8 107.926
C3 C2 H9 107.926 H5 C1 H6 108.457
H5 C1 H7 108.457 H6 C1 H7 108.202
H8 C2 H9 106.821
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.285      
2 C -0.112      
3 C 0.287      
4 N -0.977      
5 H 0.434      
6 H 0.367      
7 H 0.367      
8 H 0.459      
9 H 0.459      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.352 3.399 0.000 4.133
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.235 -3.818 0.000
y -3.818 -27.683 0.000
z 0.000 0.000 -23.855
Traceless
 xyz
x -1.466 -3.818 0.000
y -3.818 -2.138 0.000
z 0.000 0.000 3.604
Polar
3z2-r27.208
x2-y20.448
xy-3.818
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.591 1.154 0.000
y 1.154 6.770 0.000
z 0.000 0.000 5.079


<r2> (average value of r2) Å2
<r2> 87.278
(<r2>)1/2 9.342