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

using model chemistry: B97D3/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-172.030770
Energy at 298.15K 
HF Energy-172.030770
Nuclear repulsion energy102.769698
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/cc-pVQZ
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' 3072 3072 20.09 75.33 0.70 0.83
2 A' 2998 2998 21.96 115.54 0.01 0.02
3 A' 2987 2987 7.14 187.94 0.04 0.07
4 A' 2278 2278 8.11 88.21 0.20 0.34
5 A' 1479 1479 4.81 3.84 0.73 0.84
6 A' 1443 1443 5.06 9.63 0.64 0.78
7 A' 1388 1388 1.01 0.54 0.47 0.64
8 A' 1317 1317 2.73 3.80 0.44 0.61
9 A' 1070 1070 3.26 3.86 0.12 0.22
10 A' 991 991 0.14 5.21 0.37 0.54
11 A' 826 826 0.02 5.65 0.09 0.16
12 A' 538 538 0.72 1.64 0.15 0.26
13 A' 205 205 3.81 2.30 0.73 0.84
14 A" 3076 3076 19.55 30.21 0.75 0.86
15 A" 3020 3020 1.83 87.99 0.75 0.86
16 A" 1470 1470 6.69 6.40 0.75 0.86
17 A" 1264 1264 0.00 2.51 0.75 0.86
18 A" 1091 1091 0.43 0.12 0.75 0.86
19 A" 777 777 3.17 0.36 0.75 0.86
20 A" 378 378 0.20 1.52 0.75 0.86
21 A" 214 214 0.95 0.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15940.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15940.0 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 B97D3/cc-pVQZ
ABC
0.92860 0.15637 0.14085

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.518 0.559 0.000
C2 0.000 0.812 0.000
C3 -0.774 -0.427 0.000
N4 -1.367 -1.422 0.000
H5 2.051 1.513 0.000
H6 1.817 -0.007 0.885
H7 1.817 -0.007 -0.885
H8 -0.292 1.397 0.879
H9 -0.292 1.397 -0.879

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53912.49513.49981.09281.09231.09232.18012.1801
C21.53911.46082.61902.16772.18072.18071.09591.0959
C32.49511.46081.15843.42702.76982.76982.08152.0815
N43.49982.61901.15844.50533.59493.59493.14263.1426
H51.09282.16773.42704.50531.77441.77442.50562.5056
H61.09232.18072.76983.59491.77441.77022.53383.0876
H71.09232.18072.76983.59491.77441.77023.08762.5338
H82.18011.09592.08153.14262.50562.53383.08761.7588
H92.18011.09592.08153.14262.50563.08762.53381.7588

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 112.524 C1 C2 H8 110.532
C1 C2 H9 110.532 C2 C1 H5 109.734
C2 C1 H6 110.796 C2 C1 H7 110.796
C2 C3 N4 178.816 C3 C2 H8 108.156
C3 C2 H9 108.156 H5 C1 H6 108.596
H5 C1 H7 108.596 H6 C1 H7 108.259
H8 C2 H9 106.727
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.301      
2 C -0.122      
3 C -0.018      
4 N -0.197      
5 H 0.113      
6 H 0.119      
7 H 0.119      
8 H 0.143      
9 H 0.143      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.316 3.334 0.000 4.060
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.331 -3.782 0.000
y -3.782 -27.734 0.000
z 0.000 0.000 -23.950
Traceless
 xyz
x -1.489 -3.782 0.000
y -3.782 -2.093 0.000
z 0.000 0.000 3.582
Polar
3z2-r27.164
x2-y20.403
xy-3.782
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.639 1.262 0.000
y 1.262 6.857 0.000
z 0.000 0.000 5.006


<r2> (average value of r2) Å2
<r2> 88.319
(<r2>)1/2 9.398