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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/aug-cc-pVDZ
 hartrees
Energy at 0K-171.911481
Energy at 298.15K 
HF Energy-171.710245
Nuclear repulsion energy102.317426
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/aug-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' 3156 3037 17.55 68.01 0.70 0.82
2 A' 3079 2963 7.92 110.18 0.06 0.12
3 A' 3072 2956 16.31 190.66 0.00 0.01
4 A' 2273 2187 3.45 80.75 0.17 0.28
5 A' 1492 1436 4.76 2.70 0.73 0.84
6 A' 1463 1408 4.67 8.11 0.70 0.83
7 A' 1407 1353 1.25 0.77 0.33 0.50
8 A' 1338 1288 4.13 2.64 0.38 0.55
9 A' 1092 1051 3.02 6.25 0.12 0.21
10 A' 1028 989 0.54 4.17 0.46 0.63
11 A' 844 812 0.23 6.68 0.07 0.13
12 A' 536 516 0.70 1.48 0.14 0.25
13 A' 207 200 4.20 2.07 0.72 0.84
14 A" 3161 3042 16.72 22.35 0.75 0.86
15 A" 3122 3004 0.71 83.77 0.75 0.86
16 A" 1485 1429 6.98 5.24 0.75 0.86
17 A" 1283 1235 0.00 2.01 0.75 0.86
18 A" 1108 1066 0.46 0.12 0.75 0.86
19 A" 785 755 2.56 0.39 0.75 0.86
20 A" 379 364 0.31 1.28 0.75 0.86
21 A" 222 213 1.06 0.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 16265.5 cm-1
Scaled (by 0.9623) Zero Point Vibrational Energy (zpe) 15652.3 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 B2PLYP=FULLultrafine/aug-cc-pVDZ
ABC
0.92601 0.15485 0.13962

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/aug-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 -1.368 -1.440 0.000
H5 2.046 1.533 0.000
H6 1.821 0.006 0.889
H7 1.821 0.006 -0.889
H8 -0.297 1.399 0.884
H9 -0.297 1.399 -0.884

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53672.49833.51641.09691.09651.09652.18092.1809
C21.53671.46992.63962.16732.18252.18251.09851.0985
C32.49831.46991.16983.43482.77412.77412.08872.0887
N43.51642.63961.16984.52623.61183.61183.15943.1594
H51.09692.16733.43484.52621.78051.78052.50822.5082
H61.09652.18252.77413.61181.78051.77812.53453.0930
H71.09652.18252.77413.61181.78051.77813.09302.5345
H82.18091.09852.08873.15942.50822.53453.09301.7677
H92.18091.09852.08873.15942.50823.09302.53451.7677

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 112.369 C1 C2 H8 110.605
C1 C2 H9 110.605 C2 C1 H5 109.626
C2 C1 H6 110.856 C2 C1 H7 110.856
C2 C3 N4 179.123 C3 C2 H8 107.958
C3 C2 H9 107.958 H5 C1 H6 108.541
H5 C1 H7 108.541 H6 C1 H7 108.356
H8 C2 H9 107.149
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.662      
2 C 0.611      
3 C -0.157      
4 N -0.249      
5 H -0.192      
6 H -0.175      
7 H -0.175      
8 H -0.162      
9 H -0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.322 3.396 0.000 4.114
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.816 -3.876 -0.007
y -3.876 -28.333 -0.004
z -0.007 -0.004 -24.349
Traceless
 xyz
x -1.475 -3.876 -0.007
y -3.876 -2.251 -0.004
z -0.007 -0.004 3.726
Polar
3z2-r27.451
x2-y20.517
xy-3.876
xz-0.007
yz-0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.656 1.190 0.000
y 1.190 6.890 0.000
z 0.000 0.000 5.135


<r2> (average value of r2) Å2
<r2> 89.224
(<r2>)1/2 9.446