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

using model chemistry: B2PLYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-171.986520
Energy at 298.15K 
HF Energy-171.759367
Nuclear repulsion energy103.014847
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 B2PLYP/Def2TZVPP
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' 3149 3149 16.17 68.15 0.70 0.82
2 A' 3076 3076 9.13 59.96 0.12 0.22
3 A' 3072 3072 12.87 212.57 0.01 0.01
4 A' 2292 2292 3.30 67.02 0.21 0.34
5 A' 1520 1520 5.38 4.03 0.74 0.85
6 A' 1489 1489 5.03 9.80 0.71 0.83
7 A' 1431 1431 1.22 0.76 0.27 0.42
8 A' 1360 1360 3.31 2.59 0.47 0.64
9 A' 1102 1102 3.38 3.86 0.11 0.21
10 A' 1025 1025 0.39 5.38 0.40 0.57
11 A' 846 846 0.17 5.85 0.09 0.17
12 A' 547 547 0.70 1.66 0.23 0.37
13 A' 212 212 4.12 2.41 0.73 0.85
14 A" 3154 3154 15.21 22.98 0.75 0.86
15 A" 3112 3112 0.54 86.16 0.75 0.86
16 A" 1512 1512 7.29 7.55 0.75 0.86
17 A" 1302 1302 0.00 3.23 0.75 0.86
18 A" 1124 1124 0.40 0.07 0.75 0.86
19 A" 796 796 2.83 0.27 0.75 0.86
20 A" 388 388 0.33 1.95 0.75 0.86
21 A" 224 224 1.04 0.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16366.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16366.1 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 B2PLYP/Def2TZVPP
ABC
0.93671 0.15685 0.14137

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.512 0.564 0.000
C2 0.000 0.813 0.000
C3 -0.768 -0.431 0.000
N4 -1.363 -1.424 0.000
H5 2.042 1.513 0.000
H6 1.811 0.001 0.881
H7 1.811 0.001 -0.881
H8 -0.294 1.390 0.876
H9 -0.294 1.390 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53192.48693.49431.08791.08741.08742.17062.1706
C21.53191.46182.61902.15882.17142.17141.08981.0898
C32.48691.46181.15733.41702.75922.75922.07602.0760
N43.49432.61901.15734.49653.58873.58873.13523.1352
H51.08792.15883.41704.49651.76541.76542.49802.4980
H61.08742.17142.75923.58871.76541.76232.52223.0740
H71.08742.17142.75923.58871.76541.76233.07402.5222
H82.17061.08982.07603.13522.49802.52223.07401.7522
H92.17061.08982.07603.13522.49803.07402.52221.7522

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 112.321 C1 C2 H8 110.640
C1 C2 H9 110.640 C2 C1 H5 109.823
C2 C1 H6 110.849 C2 C1 H7 110.849
C2 C3 N4 179.239 C3 C2 H8 108.015
C3 C2 H9 108.015 H5 C1 H6 108.496
H5 C1 H7 108.496 H6 C1 H7 108.255
H8 C2 H9 107.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C -0.014      
3 C -0.209      
4 N -0.035      
5 H 0.092      
6 H 0.098      
7 H 0.098      
8 H 0.105      
9 H 0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.302 3.345 0.000 4.060
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.558 -3.815 -0.008
y -3.815 -28.011 -0.005
z -0.008 -0.005 -24.142
Traceless
 xyz
x -1.482 -3.815 -0.008
y -3.815 -2.161 -0.005
z -0.008 -0.005 3.643
Polar
3z2-r27.286
x2-y20.453
xy-3.815
xz-0.008
yz-0.005


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.189 1.176 0.001
y 1.176 6.478 0.000
z 0.001 0.000 4.753


<r2> (average value of r2) Å2
<r2> 88.160
(<r2>)1/2 9.389