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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-207.839320
Energy at 298.15K 
HF Energy-207.839320
Nuclear repulsion energy103.519455
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 PBEPBE/Def2TZVPP
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' 3053 3016 13.29 82.17 0.63 0.77
2 A' 2962 2926 48.43 217.29 0.02 0.03
3 A' 2323 2295 872.20 1.98 0.00 0.01
4 A' 1469 1451 1.10 11.62 0.13 0.24
5 A' 1434 1416 11.64 18.80 0.52 0.69
6 A' 1405 1388 28.15 21.32 0.28 0.44
7 A' 1116 1102 15.38 1.49 0.68 0.81
8 A' 866 856 24.14 7.29 0.15 0.26
9 A' 614 606 22.37 0.58 0.74 0.85
10 A' 176 174 15.56 2.63 0.62 0.77
11 A" 3023 2986 18.52 80.18 0.75 0.86
12 A" 1453 1435 6.48 12.75 0.75 0.86
13 A" 1089 1076 0.02 1.19 0.75 0.86
14 A" 563 556 16.15 0.54 0.75 0.86
15 A" 45 45 1.79 0.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10794.9 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 10664.2 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 PBEPBE/Def2TZVPP
ABC
2.68486 0.14357 0.13992

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.330 1.129 0.000
N2 0.000 0.583 0.000
C3 -0.550 -0.492 0.000
O4 -1.215 -1.470 0.000
H5 1.267 2.224 0.000
H6 1.889 0.816 0.894
H7 1.889 0.816 -0.894

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43752.48253.63821.09651.09991.0999
N21.43751.20802.38642.07312.10252.1025
C32.48251.20801.18313.26812.90832.9083
O43.63822.38641.18314.45113.95773.9577
H51.09652.07313.26814.45111.77971.7797
H61.09992.10252.90833.95771.77971.7880
H71.09992.10252.90833.95771.77971.7880

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.412 N2 C1 H5 109.058
N2 C1 H6 111.219 N2 C1 H7 111.219
N2 C3 O4 172.863 H5 C1 H6 108.252
H5 C1 H7 108.252 H6 C1 H7 108.748
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.145      
2 N -0.147      
3 C 0.167      
4 O -0.205      
5 H 0.112      
6 H 0.109      
7 H 0.109      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.395 1.539 0.000 2.847
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.639 -0.482 0.000
y -0.482 -24.802 0.000
z 0.000 0.000 -22.753
Traceless
 xyz
x 1.138 -0.482 0.000
y -0.482 -2.106 0.000
z 0.000 0.000 0.968
Polar
3z2-r21.935
x2-y22.163
xy-0.482
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.414 2.016 0.000
y 2.016 6.240 0.000
z 0.000 0.000 3.642


<r2> (average value of r2) Å2
<r2> 84.258
(<r2>)1/2 9.179