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

using model chemistry: PBEPBEultrafine/aug-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 PBEPBEultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-171.859673
Energy at 298.15K 
HF Energy-171.859673
Nuclear repulsion energy102.035750
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 PBEPBEultrafine/aug-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 3059 14.40 74.53 0.70 0.83
2 A' 2991 2973 18.42 111.47 0.01 0.02
3 A' 2984 2966 5.13 217.12 0.03 0.06
4 A' 2259 2245 9.70 103.93 0.18 0.30
5 A' 1428 1419 5.35 3.22 0.73 0.85
6 A' 1391 1383 5.83 8.77 0.65 0.79
7 A' 1343 1335 1.68 0.80 0.51 0.67
8 A' 1277 1269 2.97 3.34 0.42 0.59
9 A' 1050 1043 2.94 6.68 0.13 0.23
10 A' 1005 999 0.37 2.57 0.55 0.71
11 A' 829 824 0.08 5.84 0.07 0.12
12 A' 526 523 0.88 1.59 0.12 0.22
13 A' 202 200 3.60 2.15 0.72 0.84
14 A" 3081 3062 13.55 30.47 0.75 0.86
15 A" 3025 3007 0.92 86.05 0.75 0.86
16 A" 1420 1412 7.53 5.42 0.75 0.86
17 A" 1227 1220 0.00 2.04 0.75 0.86
18 A" 1056 1050 0.55 0.23 0.75 0.86
19 A" 754 749 3.35 0.43 0.75 0.86
20 A" 370 368 0.09 1.16 0.75 0.86
21 A" 211 210 0.88 0.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15753.6 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 15657.5 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 PBEPBEultrafine/aug-cc-pVDZ
ABC
0.92526 0.15397 0.13898

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.522 0.575 0.000
C2 0.000 0.813 0.000
C3 -0.771 -0.434 0.000
N4 -1.373 -1.441 0.000
H5 2.050 1.545 0.000
H6 1.832 0.008 0.895
H7 1.832 0.008 -0.895
H8 -0.302 1.401 0.889
H9 -0.302 1.401 -0.889

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54002.50463.52771.10461.10401.10402.19052.1905
C21.54001.46582.63952.17642.19232.19231.10761.1076
C32.50461.46581.17373.44552.78782.78782.09172.0917
N43.52772.63951.17374.54243.62953.62953.16453.1645
H51.10462.17643.44554.54241.79221.79222.51832.5183
H61.10402.19232.78783.62951.79221.78922.54913.1109
H71.10402.19232.78783.62951.79221.78923.11092.5491
H82.19051.10762.09173.16452.51832.54913.11091.7774
H92.19051.10762.09173.16452.51833.11092.54911.7774

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 112.846 C1 C2 H8 110.589
C1 C2 H9 110.589 C2 C1 H5 109.668
C2 C1 H6 110.944 C2 C1 H7 110.944
C2 C3 N4 179.135 C3 C2 H8 107.934
C3 C2 H9 107.934 H5 C1 H6 108.480
H5 C1 H7 108.480 H6 C1 H7 108.251
H8 C2 H9 106.707
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.605      
2 C 0.592      
3 C -0.003      
4 N -0.301      
5 H -0.196      
6 H -0.171      
7 H -0.171      
8 H -0.178      
9 H -0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.332 3.383 0.000 4.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.618 -3.814 0.000
y -3.814 -28.092 0.000
z 0.000 0.000 -24.250
Traceless
 xyz
x -1.447 -3.814 0.000
y -3.814 -2.158 0.000
z 0.000 0.000 3.605
Polar
3z2-r27.210
x2-y20.474
xy-3.814
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.017 1.321 0.000
y 1.321 7.262 0.000
z 0.000 0.000 5.327


<r2> (average value of r2) Å2
<r2> 89.511
(<r2>)1/2 9.461