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

using model chemistry: B97D3/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 B97D3/daug-cc-pVTZ
 hartrees
Energy at 0K-172.020410
Energy at 298.15K 
HF Energy-172.020410
Nuclear repulsion energy102.732681
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 B97D3/daug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3075 3075 19.80 74.07 0.70 0.82
2 A' 3001 3001 22.02 126.62 0.01 0.02
3 A' 2991 2991 7.14 196.20 0.03 0.07
4 A' 2276 2276 9.47 104.30 0.16 0.27
5 A' 1478 1478 4.75 2.95 0.73 0.85
6 A' 1443 1443 5.01 8.72 0.64 0.78
7 A' 1387 1387 1.01 0.43 0.59 0.75
8 A' 1316 1316 2.97 3.71 0.43 0.60
9 A' 1069 1069 3.18 4.68 0.12 0.21
10 A' 990 990 0.14 5.15 0.36 0.53
11 A' 825 825 0.02 6.23 0.07 0.13
12 A' 538 538 0.70 1.56 0.11 0.20
13 A' 204 204 3.91 2.00 0.71 0.83
14 A" 3079 3079 19.10 28.76 0.75 0.86
15 A" 3024 3024 1.66 86.56 0.75 0.86
16 A" 1469 1469 6.80 5.04 0.75 0.86
17 A" 1264 1264 0.00 1.98 0.75 0.86
18 A" 1091 1091 0.44 0.18 0.75 0.86
19 A" 776 776 3.03 0.40 0.75 0.86
20 A" 378 378 0.22 1.08 0.75 0.86
21 A" 213 213 0.98 0.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15944.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15944.0 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 B97D3/daug-cc-pVTZ
ABC
0.92801 0.15627 0.14076

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.518 0.559 0.000
C2 0.000 0.812 0.000
C3 -0.774 -0.427 0.000
N4 -1.367 -1.423 0.000
H5 2.051 1.514 0.000
H6 1.817 -0.006 0.886
H7 1.817 -0.006 -0.886
H8 -0.293 1.397 0.880
H9 -0.293 1.397 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53932.49543.50091.09321.09271.09272.18062.1806
C21.53931.46122.62032.16782.18122.18121.09621.0962
C32.49541.46121.15933.42752.77042.77042.08172.0817
N43.50092.62031.15934.50683.59603.59603.14363.1436
H51.09322.16783.42754.50681.77521.77522.50602.5060
H61.09272.18122.77043.59601.77521.77112.53413.0884
H71.09272.18122.77043.59601.77521.77113.08842.5341
H82.18061.09622.08173.14362.50602.53413.08841.7598
H92.18061.09622.08173.14362.50603.08842.53411.7598

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 112.519 C1 C2 H8 110.538
C1 C2 H9 110.538 C2 C1 H5 109.704
C2 C1 H6 110.793 C2 C1 H7 110.793
C2 C3 N4 178.807 C3 C2 H8 108.132
C3 C2 H9 108.132 H5 C1 H6 108.603
H5 C1 H7 108.603 H6 C1 H7 108.280
H8 C2 H9 106.771
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.426      
2 C 0.077      
3 C 0.766      
4 N -1.211      
5 H 0.192      
6 H 0.120      
7 H 0.120      
8 H 0.182      
9 H 0.182      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.339 3.368 0.000 4.100
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.439 -3.828 0.000
y -3.828 -27.872 0.000
z 0.000 0.000 -24.029
Traceless
 xyz
x -1.489 -3.828 0.000
y -3.828 -2.138 0.000
z 0.000 0.000 3.627
Polar
3z2-r27.253
x2-y20.433
xy-3.828
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.934 1.245 0.000
y 1.245 7.107 0.000
z 0.000 0.000 5.288


<r2> (average value of r2) Å2
<r2> 88.430
(<r2>)1/2 9.404