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

using model chemistry: wB97X-D/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at wB97X-D/6-31+G**
 hartrees
Energy at 0K-172.018791
Energy at 298.15K 
HF Energy-172.018791
Nuclear repulsion energy102.773202
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 wB97X-D/6-31+G**
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' 3167 3016 17.61 81.07 0.69 0.82
2 A' 3087 2940 7.14 108.69 0.08 0.15
3 A' 3077 2931 19.32 148.10 0.01 0.01
4 A' 2390 2276 12.27 79.09 0.20 0.34
5 A' 1516 1443 7.66 6.38 0.73 0.84
6 A' 1486 1415 6.69 11.67 0.74 0.85
7 A' 1434 1365 2.94 2.08 0.34 0.51
8 A' 1361 1296 3.23 3.38 0.62 0.77
9 A' 1104 1052 4.90 4.10 0.13 0.24
10 A' 1033 983 0.83 5.99 0.46 0.63
11 A' 850 810 0.23 5.12 0.13 0.23
12 A' 552 526 1.08 2.46 0.34 0.50
13 A' 212 202 4.20 3.48 0.74 0.85
14 A" 3171 3019 16.33 24.88 0.75 0.86
15 A" 3134 2984 0.38 96.50 0.75 0.86
16 A" 1510 1438 9.96 11.58 0.75 0.86
17 A" 1296 1234 0.00 5.36 0.75 0.86
18 A" 1122 1068 0.51 0.04 0.75 0.86
19 A" 800 761 3.65 0.42 0.75 0.86
20 A" 393 374 0.17 3.58 0.75 0.86
21 A" 222 212 0.92 0.81 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16457.2 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 15672.2 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 wB97X-D/6-31+G**
ABC
0.93355 0.15607 0.14073

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.514 0.567 0.000
C2 0.000 0.814 0.000
C3 -0.769 -0.435 0.000
N4 -1.365 -1.427 0.000
H5 2.042 1.524 0.000
H6 1.818 0.004 0.886
H7 1.818 0.004 -0.886
H8 -0.298 1.391 0.881
H9 -0.298 1.391 -0.881

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53422.49313.50231.09271.09241.09242.17712.1771
C21.53421.46632.62422.16222.17812.17811.09441.0944
C32.49311.46631.15803.42602.76892.76892.08112.0811
N43.50232.62421.15804.50753.60033.60033.13983.1398
H51.09272.16223.42604.50751.77301.77302.50422.5042
H61.09242.17812.76893.60031.77301.77122.53013.0855
H71.09242.17812.76893.60031.77301.77123.08552.5301
H82.17711.09442.08113.13982.50422.53013.08551.7611
H92.17711.09442.08113.13982.50423.08552.53011.7611

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 112.363 C1 C2 H8 110.723
C1 C2 H9 110.723 C2 C1 H5 109.645
C2 C1 H6 110.924 C2 C1 H7 110.924
C2 C3 N4 179.352 C3 C2 H8 107.842
C3 C2 H9 107.842 H5 C1 H6 108.469
H5 C1 H7 108.469 H6 C1 H7 108.337
H8 C2 H9 107.142
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.492      
2 C -0.216      
3 C 0.240      
4 N -0.473      
5 H 0.172      
6 H 0.180      
7 H 0.180      
8 H 0.204      
9 H 0.204      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.382 3.480 0.000 4.217
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.429 -3.933 0.000
y -3.933 -27.902 0.000
z 0.000 0.000 -23.988
Traceless
 xyz
x -1.484 -3.933 0.000
y -3.933 -2.193 0.000
z 0.000 0.000 3.677
Polar
3z2-r27.354
x2-y20.473
xy-3.933
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.874 1.272 0.000
y 1.272 6.457 0.000
z 0.000 0.000 4.523


<r2> (average value of r2) Å2
<r2> 88.425
(<r2>)1/2 9.403