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

using model chemistry: PBEPBE/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 PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-171.847266
Energy at 298.15K 
HF Energy-171.847266
Nuclear repulsion energy101.967230
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 PBEPBE/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' 3078 3061 12.55 83.98 0.72 0.83
2 A' 2990 2973 17.36 118.05 0.01 0.01
3 A' 2979 2962 6.32 144.46 0.06 0.11
4 A' 2276 2263 7.31 68.44 0.27 0.42
5 A' 1429 1421 5.23 9.43 0.74 0.85
6 A' 1390 1382 5.01 16.05 0.69 0.82
7 A' 1346 1338 0.60 2.14 0.65 0.79
8 A' 1286 1279 3.72 4.40 0.58 0.73
9 A' 1052 1046 3.06 4.25 0.15 0.26
10 A' 1012 1006 0.41 3.32 0.60 0.75
11 A' 835 830 0.11 4.80 0.14 0.24
12 A' 531 528 1.03 1.52 0.31 0.47
13 A' 205 203 2.78 2.58 0.73 0.85
14 A" 3082 3064 11.49 38.93 0.75 0.86
15 A" 3019 3002 1.46 100.03 0.75 0.86
16 A" 1418 1410 7.00 15.52 0.75 0.86
17 A" 1231 1224 0.03 5.21 0.75 0.86
18 A" 1057 1051 0.70 0.25 0.75 0.86
19 A" 761 756 4.46 0.41 0.75 0.86
20 A" 384 382 0.00 2.36 0.75 0.86
21 A" 219 218 0.63 0.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15789.5 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 15698.0 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 PBEPBE/cc-pVDZ
ABC
0.92416 0.15387 0.13889

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.520 0.577 0.000
C2 0.000 0.813 0.000
C3 -0.771 -0.434 0.000
N4 -1.373 -1.443 0.000
H5 2.053 1.548 0.000
H6 1.834 0.007 0.896
H7 1.834 0.007 -0.896
H8 -0.306 1.404 0.889
H9 -0.306 1.404 -0.889

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53862.50423.52821.10741.10731.10732.19322.1932
C21.53861.46582.64022.18062.19472.19471.11101.1110
C32.50421.46581.17443.44982.78992.78992.09442.0944
N43.52822.64021.17444.54723.63173.63173.16753.1675
H51.10742.18063.44984.54721.79561.79562.52502.5250
H61.10732.19472.78993.63171.79561.79202.55583.1176
H71.10732.19472.78993.63171.79561.79203.11762.5558
H82.19321.11102.09443.16752.52502.55583.11761.7787
H92.19321.11102.09443.16752.52503.11762.55581.7787

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 112.900 C1 C2 H8 110.709
C1 C2 H9 110.709 C2 C1 H5 109.930
C2 C1 H6 111.045 C2 C1 H7 111.045
C2 C3 N4 179.123 C3 C2 H8 107.947
C3 C2 H9 107.947 H5 C1 H6 108.347
H5 C1 H7 108.347 H6 C1 H7 108.034
H8 C2 H9 106.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.060      
2 C -0.049      
3 C -0.087      
4 N -0.119      
5 H 0.043      
6 H 0.058      
7 H 0.058      
8 H 0.078      
9 H 0.078      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.130 3.092 0.000 3.754
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.729 -3.414 0.000
y -3.414 -27.076 0.000
z 0.000 0.000 -23.757
Traceless
 xyz
x -1.312 -3.414 0.000
y -3.414 -1.833 0.000
z 0.000 0.000 3.145
Polar
3z2-r26.291
x2-y20.347
xy-3.414
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.748 1.255 0.000
y 1.255 6.159 0.000
z 0.000 0.000 4.271


<r2> (average value of r2) Å2
<r2> 89.086
(<r2>)1/2 9.439