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

using model chemistry: BLYP/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 BLYP/aug-cc-pVDZ
 hartrees
Energy at 0K-172.011146
Energy at 298.15K 
HF Energy-172.011146
Nuclear repulsion energy101.688999
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 BLYP/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' 3049 3043 18.96 75.93 0.71 0.83
2 A' 2977 2971 20.77 129.05 0.01 0.02
3 A' 2969 2963 7.17 196.34 0.04 0.07
4 A' 2240 2235 8.24 104.53 0.18 0.30
5 A' 1439 1437 4.61 3.07 0.72 0.84
6 A' 1408 1405 4.53 9.25 0.66 0.80
7 A' 1356 1353 1.02 0.64 0.50 0.66
8 A' 1284 1281 3.62 3.99 0.40 0.57
9 A' 1049 1047 2.76 5.19 0.12 0.22
10 A' 980 978 0.20 5.42 0.38 0.55
11 A' 812 811 0.05 6.26 0.08 0.14
12 A' 521 520 0.86 1.79 0.11 0.19
13 A' 203 202 3.72 2.21 0.72 0.84
14 A" 3054 3049 18.44 30.49 0.75 0.86
15 A" 3002 2996 1.80 88.75 0.75 0.86
16 A" 1432 1430 6.50 5.51 0.75 0.86
17 A" 1236 1233 0.00 2.21 0.75 0.86
18 A" 1067 1065 0.46 0.21 0.75 0.86
19 A" 760 758 2.53 0.44 0.75 0.86
20 A" 365 364 0.15 1.20 0.75 0.86
21 A" 210 210 0.92 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15705.3 cm-1
Scaled (by 0.9981) Zero Point Vibrational Energy (zpe) 15675.5 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 BLYP/aug-cc-pVDZ
ABC
0.92073 0.15244 0.13764

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.533 0.576 0.000
C2 0.000 0.815 0.000
C3 -0.778 -0.437 0.000
N4 -1.383 -1.443 0.000
H5 2.057 1.548 0.000
H6 1.843 0.009 0.895
H7 1.843 0.009 -0.895
H8 -0.298 1.404 0.889
H9 -0.298 1.404 -0.889

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.55142.52283.54601.10441.10371.10372.19722.1972
C21.55141.47452.64782.18392.20182.20181.10681.1068
C32.52281.47451.17333.46092.80522.80522.09982.0998
N43.54602.64781.17334.55813.64913.64913.17293.1729
H51.10442.18393.46094.55811.79251.79252.52192.5219
H61.10372.20182.80523.64911.79251.78992.55533.1163
H71.10372.20182.80523.64911.79251.78993.11632.5553
H82.19721.10682.09983.17292.52192.55533.11631.7778
H92.19721.10682.09983.17292.52193.11632.55531.7778

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 112.944 C1 C2 H8 110.381
C1 C2 H9 110.381 C2 C1 H5 109.484
C2 C1 H6 110.924 C2 C1 H7 110.924
C2 C3 N4 179.221 C3 C2 H8 108.027
C3 C2 H9 108.027 H5 C1 H6 108.540
H5 C1 H7 108.540 H6 C1 H7 108.361
H8 C2 H9 106.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.981      
2 C 0.982      
3 C -0.175      
4 N -0.181      
5 H -0.329      
6 H -0.304      
7 H -0.304      
8 H -0.335      
9 H -0.335      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.343 3.382 0.000 4.114
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.964 -3.895 0.000
y -3.895 -28.427 0.000
z 0.000 0.000 -24.476
Traceless
 xyz
x -1.512 -3.895 0.000
y -3.895 -2.207 0.000
z 0.000 0.000 3.719
Polar
3z2-r27.438
x2-y20.464
xy-3.895
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.089 1.328 0.000
y 1.328 7.298 0.000
z 0.000 0.000 5.371


<r2> (average value of r2) Å2
<r2> 90.363
(<r2>)1/2 9.506