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

using model chemistry: B97D3/aug-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 B97D3/aug-cc-pVTZ
 hartrees
Energy at 0K-172.020199
Energy at 298.15K 
HF Energy-172.020199
Nuclear repulsion energy102.737402
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 B97D3/aug-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' 3075 3028 19.85 74.32 0.70 0.82
2 A' 3001 2955 22.06 125.67 0.01 0.02
3 A' 2991 2946 7.13 196.58 0.03 0.07
4 A' 2276 2241 9.62 104.26 0.16 0.28
5 A' 1478 1455 4.74 2.96 0.73 0.84
6 A' 1442 1420 5.01 8.73 0.64 0.78
7 A' 1387 1366 1.00 0.45 0.59 0.74
8 A' 1317 1297 3.00 3.71 0.43 0.60
9 A' 1069 1053 3.17 4.68 0.12 0.21
10 A' 991 976 0.13 5.11 0.37 0.53
11 A' 825 813 0.02 6.23 0.07 0.13
12 A' 538 530 0.71 1.59 0.11 0.20
13 A' 205 202 3.93 2.05 0.71 0.83
14 A" 3079 3032 19.13 29.04 0.75 0.86
15 A" 3024 2977 1.69 86.56 0.75 0.86
16 A" 1469 1447 6.80 5.05 0.75 0.86
17 A" 1264 1245 0.00 2.00 0.75 0.86
18 A" 1091 1074 0.44 0.18 0.75 0.86
19 A" 776 764 3.05 0.41 0.75 0.86
20 A" 378 372 0.23 1.14 0.75 0.86
21 A" 212 209 0.99 0.31 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 15944.9 cm-1
Scaled (by 0.9847) Zero Point Vibrational Energy (zpe) 15701.0 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 B97D3/aug-cc-pVTZ
ABC
0.92904 0.15623 0.14075

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.518 0.560 0.000
C2 0.000 0.812 0.000
C3 -0.773 -0.428 0.000
N4 -1.367 -1.423 0.000
H5 2.050 1.515 0.000
H6 1.818 -0.006 0.886
H7 1.818 -0.006 -0.886
H8 -0.293 1.397 0.880
H9 -0.293 1.397 -0.880

Atom - Atom Distances (Å)
  C1 C2 C3 N4 H5 H6 H7 H8 H9
C11.53902.49543.50151.09321.09271.09272.18032.1803
C21.53901.46072.62002.16772.18112.18111.09631.0963
C32.49541.46071.15943.42742.77072.77072.08152.0815
N43.50152.62001.15944.50713.59713.59713.14333.1433
H51.09322.16773.42744.50711.77511.77512.50562.5056
H61.09272.18112.77073.59711.77511.77102.53413.0883
H71.09272.18112.77073.59711.77511.77103.08832.5341
H82.18031.09632.08153.14332.50562.53413.08831.7595
H92.18031.09632.08153.14332.50563.08832.53411.7595

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 112.559 C1 C2 H8 110.527
C1 C2 H9 110.527 C2 C1 H5 109.712
C2 C1 H6 110.802 C2 C1 H7 110.802
C2 C3 N4 178.852 C3 C2 H8 108.139
C3 C2 H9 108.139 H5 C1 H6 108.597
H5 C1 H7 108.597 H6 C1 H7 108.266
H8 C2 H9 106.735
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.468      
2 C 0.083      
3 C 0.246      
4 N -0.534      
5 H 0.136      
6 H 0.153      
7 H 0.153      
8 H 0.115      
9 H 0.115      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.340 3.369 0.000 4.102
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.441 -3.832 0.000
y -3.832 -27.878 0.000
z 0.000 0.000 -24.026
Traceless
 xyz
x -1.488 -3.832 0.000
y -3.832 -2.145 0.000
z 0.000 0.000 3.633
Polar
3z2-r27.266
x2-y20.438
xy-3.832
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.925 1.253 0.000
y 1.253 7.105 0.000
z 0.000 0.000 5.274


<r2> (average value of r2) Å2
<r2> 88.435
(<r2>)1/2 9.404