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

using model chemistry: B3LYPultrafine/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3LYPultrafine/TZVP
 hartrees
Energy at 0K-172.131927
Energy at 298.15K 
HF Energy-172.131927
Nuclear repulsion energy102.978743
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 B3LYPultrafine/TZVP
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' 3120 3005 18.83 74.61 0.70 0.83
2 A' 3050 2939 19.96 52.88 0.04 0.07
3 A' 3047 2935 4.59 220.29 0.03 0.06
4 A' 2363 2276 9.91 77.75 0.22 0.36
5 A' 1510 1454 6.85 5.74 0.75 0.85
6 A' 1479 1425 6.28 12.69 0.72 0.84
7 A' 1424 1372 1.56 1.10 0.29 0.45
8 A' 1355 1305 2.79 3.57 0.60 0.75
9 A' 1097 1056 4.07 2.26 0.14 0.25
10 A' 1013 976 0.36 6.77 0.39 0.56
11 A' 840 809 0.15 4.94 0.14 0.25
12 A' 552 532 1.02 2.42 0.27 0.43
13 A' 215 207 3.99 3.32 0.74 0.85
14 A" 3125 3011 17.93 27.93 0.75 0.86
15 A" 3079 2966 0.99 93.74 0.75 0.86
16 A" 1502 1447 8.46 10.28 0.75 0.86
17 A" 1294 1247 0.00 5.44 0.75 0.86
18 A" 1120 1079 0.39 0.10 0.75 0.86
19 A" 795 766 3.11 0.29 0.75 0.86
20 A" 393 379 0.20 3.27 0.75 0.86
21 A" 222 214 0.95 0.80 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16295.7 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 15699.3 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 B3LYPultrafine/TZVP
ABC
0.94035 0.15632 0.14105

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.517 0.565 0.000
C2 0.000 0.807 0.000
C3 -0.771 -0.434 0.000
N4 -1.367 -1.419 0.000
H5 2.043 1.520 0.000
H6 1.822 0.004 0.883
H7 1.822 0.004 -0.883
H8 -0.296 1.388 0.877
H9 -0.296 1.388 -0.877

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53602.49643.50041.09071.09011.09012.17532.1753
C21.53601.46132.61272.16372.17882.17881.09291.0929
C32.49641.46131.15143.42602.77462.77462.07752.0775
N43.50042.61271.15144.50203.60263.60263.13023.1302
H51.09072.16373.42604.50201.76881.76882.50112.5011
H61.09012.17882.77463.60261.76881.76662.53023.0826
H71.09012.17882.77463.60261.76881.76663.08262.5302
H82.17531.09292.07753.13022.50112.53023.08261.7549
H92.17531.09292.07753.13022.50113.08262.53021.7549

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 112.763 C1 C2 H8 110.543
C1 C2 H9 110.543 C2 C1 H5 109.751
C2 C1 H6 110.988 C2 C1 H7 110.988
C2 C3 N4 179.335 C3 C2 H8 107.979
C3 C2 H9 107.979 H5 C1 H6 108.394
H5 C1 H7 108.394 H6 C1 H7 108.244
H8 C2 H9 106.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.351      
2 C -0.264      
3 C 0.009      
4 N -0.118      
5 H 0.140      
6 H 0.134      
7 H 0.134      
8 H 0.158      
9 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.333 3.375 0.000 4.102
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.629 -3.903 0.000
y -3.903 -28.068 0.000
z 0.000 0.000 -24.144
Traceless
 xyz
x -1.523 -3.903 0.000
y -3.903 -2.181 0.000
z 0.000 0.000 3.705
Polar
3z2-r27.409
x2-y20.439
xy-3.903
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.980 1.259 0.000
y 1.259 6.429 0.000
z 0.000 0.000 4.583


<r2> (average value of r2) Å2
<r2> 88.384
(<r2>)1/2 9.401