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

using model chemistry: B1B95/daug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-172.000637
Energy at 298.15K 
HF Energy-172.000637
Nuclear repulsion energy102.998023
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-pVDZ
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' 3170 3170 15.51 69.42 0.70 0.82
2 A' 3084 3084 8.90 70.96 0.10 0.17
3 A' 3080 3080 13.57 235.45 0.00 0.01
4 A' 2380 2380 12.07 92.76 0.15 0.27
5 A' 1480 1480 5.54 2.99 0.73 0.85
6 A' 1443 1443 5.78 8.09 0.68 0.81
7 A' 1393 1393 1.63 0.79 0.41 0.58
8 A' 1330 1330 3.65 2.61 0.41 0.58
9 A' 1090 1090 3.13 6.83 0.13 0.23
10 A' 1038 1038 0.87 2.42 0.59 0.74
11 A' 855 855 0.09 6.03 0.06 0.12
12 A' 547 547 0.84 1.36 0.16 0.27
13 A' 210 210 4.30 1.97 0.70 0.83
14 A" 3173 3173 14.40 25.46 0.75 0.86
15 A" 3128 3128 0.50 82.57 0.75 0.86
16 A" 1472 1472 7.72 5.36 0.75 0.86
17 A" 1272 1272 0.00 2.00 0.75 0.86
18 A" 1096 1096 0.45 0.11 0.75 0.86
19 A" 775 775 3.59 0.37 0.75 0.86
20 A" 389 389 0.33 1.23 0.75 0.86
21 A" 218 218 1.05 0.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16310.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16310.4 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-pVDZ
ABC
0.94076 0.15679 0.14148

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.508 0.570 0.000
C2 0.000 0.809 0.000
C3 -0.766 -0.434 0.000
N4 -1.359 -1.428 0.000
H5 2.032 1.530 0.000
H6 1.815 0.008 0.886
H7 1.815 0.008 -0.886
H8 -0.301 1.387 0.880
H9 -0.301 1.387 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52662.48543.49431.09361.09311.09312.17162.1716
C21.52661.45932.61672.15642.17222.17221.09571.0957
C32.48541.45931.15753.41822.76372.76372.07532.0753
N43.49432.61671.15754.49963.59403.59403.13333.1333
H51.09362.15643.41824.49961.77451.77452.49802.4980
H61.09312.17222.76373.59401.77451.77182.52583.0820
H71.09312.17222.76373.59401.77451.77183.08202.5258
H82.17161.09572.07533.13332.49802.52583.08201.7605
H92.17161.09572.07533.13332.49803.08202.52581.7605

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 112.668 C1 C2 H8 110.736
C1 C2 H9 110.736 C2 C1 H5 109.656
C2 C1 H6 110.941 C2 C1 H7 110.941
C2 C3 N4 179.172 C3 C2 H8 107.781
C3 C2 H9 107.781 H5 C1 H6 108.477
H5 C1 H7 108.477 H6 C1 H7 108.273
H8 C2 H9 106.902
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.188      
2 C -0.413      
3 C 0.959      
4 N -0.595      
5 H -0.347      
6 H -0.171      
7 H -0.171      
8 H -0.224      
9 H -0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.349 3.416 0.000 4.146
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.333 -3.820 0.000
y -3.820 -27.817 0.000
z 0.000 0.000 -23.967
Traceless
 xyz
x -1.441 -3.820 0.000
y -3.820 -2.167 0.000
z 0.000 0.000 3.608
Polar
3z2-r27.216
x2-y20.484
xy-3.820
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.655 1.178 0.000
y 1.178 6.869 0.000
z 0.000 0.000 5.142


<r2> (average value of r2) Å2
<r2> 88.034
(<r2>)1/2 9.383