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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-208.013864
Energy at 298.15K 
HF Energy-208.013864
Nuclear repulsion energy103.815383
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 TPSSh/6-31G(2df,p)
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' 3127 3018 18.03 79.61 0.66 0.80
2 A' 3031 2925 47.33 153.42 0.01 0.03
3 A' 2374 2291 870.81 0.82 0.01 0.03
4 A' 1516 1463 1.15 7.17 0.50 0.66
5 A' 1488 1436 11.01 14.94 0.55 0.71
6 A' 1457 1406 42.25 26.83 0.32 0.48
7 A' 1159 1118 18.69 2.26 0.68 0.81
8 A' 879 848 28.92 8.05 0.18 0.30
9 A' 643 621 24.41 0.47 0.71 0.83
10 A' 176 170 15.39 1.80 0.58 0.73
11 A" 3098 2989 23.50 72.30 0.75 0.86
12 A" 1517 1464 3.98 17.44 0.75 0.86
13 A" 1133 1093 0.05 2.37 0.75 0.86
14 A" 592 572 20.24 0.65 0.75 0.86
15 A" 44 42 1.89 0.68 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11117.3 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 10728.2 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 TPSSh/6-31G(2df,p)
ABC
2.60961 0.14500 0.14104

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.349 1.096 0.000
N2 0.000 0.590 0.000
C3 -0.558 -0.478 0.000
O4 -1.230 -1.445 0.000
H5 1.311 2.187 0.000
H6 1.893 0.766 0.891
H7 1.893 0.766 -0.891

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44122.47363.62131.09171.09491.0949
N21.44121.20522.37802.06672.09972.0997
C32.47361.20521.17753.25592.89002.8900
O43.62132.37801.17754.43343.92933.9293
H51.09172.06673.25594.43341.77541.7754
H61.09492.09972.89003.92931.77541.7826
H71.09492.09972.89003.92931.77541.7826

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.181 N2 C1 H5 108.579
N2 C1 H6 111.032 N2 C1 H7 111.032
N2 C3 O4 172.822 H5 C1 H6 108.574
H5 C1 H7 108.574 H6 C1 H7 108.983
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.356      
2 N -0.402      
3 C 0.584      
4 O -0.326      
5 H 0.170      
6 H 0.165      
7 H 0.165      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.360 1.386 0.000 2.737
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.824 1.824 0.000
y 1.824 5.482 0.000
z 0.000 0.000 3.177


<r2> (average value of r2) Å2
<r2> 83.252
(<r2>)1/2 9.124