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

using model chemistry: B2PLYP=FULLultrafine/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-171.998899
Energy at 298.15K 
HF Energy-171.753689
Nuclear repulsion energy103.125974
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/cc-pVTZ
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' 3148 3008 16.65 70.36 0.69 0.82
2 A' 3078 2941 12.18 27.02 0.27 0.43
3 A' 3075 2938 9.94 235.95 0.01 0.02
4 A' 2298 2195 3.20 63.32 0.22 0.35
5 A' 1524 1456 5.33 4.32 0.73 0.85
6 A' 1493 1426 4.95 10.23 0.70 0.82
7 A' 1432 1368 1.31 0.78 0.30 0.46
8 A' 1363 1302 3.06 2.88 0.44 0.61
9 A' 1104 1055 3.35 3.71 0.12 0.22
10 A' 1027 982 0.37 5.26 0.41 0.58
11 A' 847 809 0.14 5.50 0.10 0.17
12 A' 547 523 0.66 1.50 0.23 0.38
13 A' 212 202 3.95 2.25 0.73 0.84
14 A" 3152 3011 15.72 24.24 0.75 0.86
15 A" 3109 2970 0.73 87.88 0.75 0.86
16 A" 1516 1449 7.12 7.83 0.75 0.86
17 A" 1304 1246 0.00 3.03 0.75 0.86
18 A" 1126 1076 0.40 0.08 0.75 0.86
19 A" 797 762 2.96 0.31 0.75 0.86
20 A" 390 373 0.26 1.84 0.75 0.86
21 A" 227 216 1.00 0.47 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16383.8 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 15653.1 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=FULLultrafine/cc-pVTZ
ABC
0.93767 0.15728 0.14172

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.510 0.562 0.000
C2 0.000 0.812 0.000
C3 -0.768 -0.429 0.000
N4 -1.361 -1.422 0.000
H5 2.040 1.510 0.000
H6 1.808 -0.001 0.880
H7 1.808 -0.001 -0.880
H8 -0.293 1.390 0.875
H9 -0.293 1.390 -0.875

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53032.48383.48951.08671.08641.08642.16792.1679
C21.53031.45942.61602.15662.16902.16901.08871.0887
C32.48381.45941.15673.41282.75572.75572.07392.0739
N43.48952.61601.15674.49083.58303.58303.13313.1331
H51.08672.15663.41284.49081.76391.76392.49462.4946
H61.08642.16902.75573.58301.76391.76042.51933.0704
H71.08642.16902.75573.58301.76391.76043.07042.5193
H82.16791.08872.07393.13312.49462.51933.07041.7499
H92.16791.08872.07393.13312.49463.07042.51931.7499

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 112.336 C1 C2 H8 110.600
C1 C2 H9 110.600 C2 C1 H5 109.828
C2 C1 H6 110.829 C2 C1 H7 110.829
C2 C3 N4 179.095 C3 C2 H8 108.072
C3 C2 H9 108.072 H5 C1 H6 108.524
H5 C1 H7 108.524 H6 C1 H7 108.237
H8 C2 H9 106.961
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.308      
2 C -0.185      
3 C -0.101      
4 N -0.044      
5 H 0.116      
6 H 0.122      
7 H 0.122      
8 H 0.140      
9 H 0.140      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.260 3.287 0.000 3.988
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.403 -3.724 -0.008
y -3.724 -27.816 -0.006
z -0.008 -0.006 -24.047
Traceless
 xyz
x -1.472 -3.724 -0.008
y -3.724 -2.091 -0.006
z -0.008 -0.006 3.562
Polar
3z2-r27.125
x2-y20.412
xy-3.724
xz-0.008
yz-0.006


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.043 1.132 0.001
y 1.132 6.304 0.000
z 0.001 0.000 4.618


<r2> (average value of r2) Å2
<r2> 87.892
(<r2>)1/2 9.375