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

using model chemistry: B2PLYP=FULLultrafine/daug-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 B2PLYP=FULLultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-171.912932
Energy at 298.15K 
HF Energy-171.710970
Nuclear repulsion energy102.334333
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=FULLultrafine/daug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3154 3154 18.07 68.60 0.70 0.82
2 A' 3076 3076 8.54 96.52 0.07 0.13
3 A' 3069 3069 15.88 209.18 0.00 0.01
4 A' 2273 2273 3.31 82.31 0.15 0.26
5 A' 1493 1493 4.91 2.68 0.73 0.84
6 A' 1460 1460 4.84 8.20 0.70 0.82
7 A' 1404 1404 1.24 0.72 0.35 0.52
8 A' 1338 1338 4.02 2.61 0.39 0.56
9 A' 1091 1091 3.10 6.36 0.12 0.21
10 A' 1027 1027 0.55 4.10 0.47 0.64
11 A' 843 843 0.22 6.80 0.06 0.12
12 A' 537 537 0.71 1.39 0.14 0.24
13 A' 208 208 4.17 1.95 0.70 0.83
14 A" 3158 3158 17.04 22.90 0.75 0.86
15 A" 3119 3119 0.71 83.67 0.75 0.86
16 A" 1486 1486 7.04 5.24 0.75 0.86
17 A" 1282 1282 0.00 2.01 0.75 0.86
18 A" 1107 1107 0.47 0.12 0.75 0.86
19 A" 782 782 2.64 0.36 0.75 0.86
20 A" 378 378 0.31 1.19 0.75 0.86
21 A" 220 220 1.05 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16251.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16251.5 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 B2PLYP=FULLultrafine/daug-cc-pVDZ
ABC
0.92632 0.15488 0.13965

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.517 0.572 0.000
C2 0.000 0.818 0.000
C3 -0.770 -0.434 0.000
N4 -1.367 -1.439 0.000
H5 2.046 1.532 0.000
H6 1.820 0.007 0.889
H7 1.820 0.007 -0.889
H8 -0.298 1.398 0.883
H9 -0.298 1.398 -0.883

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53682.49843.51621.09641.09591.09592.18082.1808
C21.53681.46972.63922.16692.18222.18221.09791.0979
C32.49841.46971.16963.43432.77402.77402.08782.0878
N43.51622.63921.16964.52553.61153.61153.15843.1584
H51.09642.16693.43434.52551.77971.77972.50802.5080
H61.09592.18222.77403.61151.77971.77712.53433.0923
H71.09592.18222.77403.61151.77971.77713.09232.5343
H82.18081.09792.08783.15842.50802.53433.09231.7666
H92.18081.09792.08783.15842.50803.09232.53431.7666

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 112.383 C1 C2 H8 110.630
C1 C2 H9 110.630 C2 C1 H5 109.619
C2 C1 H6 110.858 C2 C1 H7 110.858
C2 C3 N4 179.098 C3 C2 H8 107.933
C3 C2 H9 107.933 H5 C1 H6 108.543
H5 C1 H7 108.543 H6 C1 H7 108.354
H8 C2 H9 107.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.220      
2 C -0.200      
3 C 0.822      
4 N -0.586      
5 H -0.362      
6 H -0.203      
7 H -0.203      
8 H -0.244      
9 H -0.244      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.321 3.392 0.000 4.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.808 -3.858 -0.006
y -3.858 -28.321 -0.004
z -0.006 -0.004 -24.368
Traceless
 xyz
x -1.463 -3.858 -0.006
y -3.858 -2.233 -0.004
z -0.006 -0.004 3.696
Polar
3z2-r27.393
x2-y20.513
xy-3.858
xz-0.006
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.702 1.164 0.000
y 1.164 6.910 -0.000
z 0.000 -0.000 5.199


<r2> (average value of r2) Å2
<r2> 89.207
(<r2>)1/2 9.445