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

using model chemistry: B97D3/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B97D3/6-311G**
 hartrees
Energy at 0K-172.001872
Energy at 298.15K 
HF Energy-172.001872
Nuclear repulsion energy102.533596
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 B97D3/6-311G**
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' 3076 3032 25.25 83.33 0.71 0.83
2 A' 2999 2956 25.44 96.16 0.01 0.03
3 A' 2990 2947 8.96 165.00 0.05 0.10
4 A' 2282 2250 7.11 73.43 0.26 0.41
5 A' 1481 1460 5.52 7.25 0.74 0.85
6 A' 1446 1425 5.08 13.38 0.71 0.83
7 A' 1388 1368 1.09 1.66 0.38 0.55
8 A' 1318 1299 2.68 4.71 0.56 0.72
9 A' 1070 1054 3.66 2.65 0.14 0.24
10 A' 994 980 0.17 5.66 0.41 0.59
11 A' 827 815 0.02 5.09 0.14 0.24
12 A' 541 533 0.86 1.97 0.29 0.45
13 A' 207 204 3.48 2.99 0.73 0.85
14 A" 3080 3036 25.67 33.71 0.75 0.86
15 A" 3023 2980 3.27 99.87 0.75 0.86
16 A" 1472 1451 7.40 11.71 0.75 0.86
17 A" 1264 1246 0.02 5.29 0.75 0.86
18 A" 1091 1075 0.44 0.10 0.75 0.86
19 A" 778 767 3.50 0.39 0.75 0.86
20 A" 383 378 0.08 2.89 0.75 0.86
21 A" 217 214 0.78 0.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15963.4 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 15735.1 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 B97D3/6-311G**
ABC
0.92509 0.15566 0.14022

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.521 0.560 0.000
C2 0.000 0.813 0.000
C3 -0.775 -0.427 0.000
N4 -1.370 -1.426 0.000
H5 2.056 1.517 0.000
H6 1.821 -0.007 0.887
H7 1.821 -0.007 -0.887
H8 -0.293 1.400 0.881
H9 -0.293 1.400 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.54222.49973.50811.09551.09491.09492.18452.1845
C21.54221.46262.62492.17272.18542.18541.09851.0985
C32.49971.46261.16243.43392.77572.77572.08522.0852
N43.50812.62491.16244.51623.60383.60383.14993.1499
H51.09552.17273.43394.51621.77861.77862.51092.5109
H61.09492.18542.77573.60381.77861.77472.53903.0943
H71.09492.18542.77573.60381.77861.77473.09432.5390
H82.18451.09852.08523.14992.51092.53903.09431.7626
H92.18451.09852.08523.14992.51093.09432.53901.7626

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 112.565 C1 C2 H8 110.506
C1 C2 H9 110.506 C2 C1 H5 109.757
C2 C1 H6 110.792 C2 C1 H7 110.792
C2 C3 N4 178.821 C3 C2 H8 108.175
C3 C2 H9 108.175 H5 C1 H6 108.581
H5 C1 H7 108.581 H6 C1 H7 108.274
H8 C2 H9 106.700
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.303      
2 C -0.202      
3 C 0.056      
4 N -0.250      
5 H 0.121      
6 H 0.132      
7 H 0.132      
8 H 0.157      
9 H 0.157      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.235 3.232 0.000 3.929
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.104 -3.666 0.000
y -3.666 -27.463 0.000
z 0.000 0.000 -23.838
Traceless
 xyz
x -1.453 -3.666 0.000
y -3.666 -1.992 0.000
z 0.000 0.000 3.445
Polar
3z2-r26.890
x2-y20.360
xy-3.666
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.874 1.278 0.000
y 1.278 6.284 0.000
z 0.000 0.000 4.365


<r2> (average value of r2) Å2
<r2> 88.513
(<r2>)1/2 9.408