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

using model chemistry: PBE1PBE/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 PBE1PBE/aug-cc-pVDZ
 hartrees
Energy at 0K-171.875707
Energy at 298.15K 
HF Energy-171.875707
Nuclear repulsion energy102.808970
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 PBE1PBE/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' 3164 3042 14.17 68.97 0.70 0.82
2 A' 3077 2958 8.02 78.00 0.08 0.16
3 A' 3072 2954 13.11 226.79 0.00 0.01
4 A' 2374 2283 12.56 92.97 0.17 0.29
5 A' 1475 1419 5.81 2.97 0.73 0.84
6 A' 1442 1387 6.04 7.88 0.68 0.81
7 A' 1393 1340 2.01 0.85 0.40 0.58
8 A' 1330 1279 3.58 2.57 0.41 0.58
9 A' 1091 1049 3.24 6.68 0.13 0.23
10 A' 1040 1000 0.87 2.30 0.59 0.74
11 A' 857 824 0.07 5.80 0.07 0.12
12 A' 548 527 0.85 1.45 0.16 0.28
13 A' 211 202 4.28 2.06 0.72 0.84
14 A" 3167 3045 13.11 24.84 0.75 0.86
15 A" 3121 3002 0.40 82.60 0.75 0.86
16 A" 1468 1411 8.09 5.23 0.75 0.86
17 A" 1272 1223 0.01 1.90 0.75 0.86
18 A" 1096 1054 0.48 0.12 0.75 0.86
19 A" 779 749 3.74 0.41 0.75 0.86
20 A" 390 375 0.30 1.32 0.75 0.86
21 A" 220 212 1.03 0.35 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16292.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 15667.0 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 PBE1PBE/aug-cc-pVDZ
ABC
0.93666 0.15634 0.14107

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.510 0.570 0.000
C2 0.000 0.810 0.000
C3 -0.767 -0.434 0.000
N4 -1.361 -1.429 0.000
H5 2.037 1.532 0.000
H6 1.818 0.006 0.889
H7 1.818 0.006 -0.889
H8 -0.302 1.391 0.883
H9 -0.302 1.391 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.52892.48813.49911.09691.09661.09662.17612.1761
C21.52891.46072.62052.16132.17702.17701.09931.0993
C32.48811.46071.15993.42422.76782.76782.07962.0796
N43.49912.62051.15994.50793.59943.59943.13953.1395
H51.09692.16133.42424.50791.77981.77982.50382.5038
H61.09662.17702.76783.59941.77981.77712.53173.0899
H71.09662.17702.76783.59941.77981.77713.08992.5317
H82.17611.09932.07963.13952.50382.53173.08991.7660
H92.17611.09932.07963.13952.50383.08992.53171.7660

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 112.644 C1 C2 H8 110.725
C1 C2 H9 110.725 C2 C1 H5 109.698
C2 C1 H6 110.952 C2 C1 H7 110.952
C2 C3 N4 179.198 C3 C2 H8 107.816
C3 C2 H9 107.816 H5 C1 H6 108.460
H5 C1 H7 108.460 H6 C1 H7 108.243
H8 C2 H9 106.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.448      
2 C 0.409      
3 C -0.012      
4 N -0.334      
5 H -0.126      
6 H -0.105      
7 H -0.105      
8 H -0.088      
9 H -0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.360 3.437 0.000 4.170
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.408 -3.848 0.000
y -3.848 -27.885 0.000
z 0.000 0.000 -24.009
Traceless
 xyz
x -1.461 -3.848 0.000
y -3.848 -2.176 0.000
z 0.000 0.000 3.637
Polar
3z2-r27.274
x2-y20.477
xy-3.848
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.640 1.206 0.000
y 1.206 6.882 0.000
z 0.000 0.000 5.108


<r2> (average value of r2) Å2
<r2> 88.302
(<r2>)1/2 9.397