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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-207.984158
Energy at 298.15K 
HF Energy-207.984158
Nuclear repulsion energy104.347160
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 B3PW91/6-311+G(3df,2p)
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' 3125 2992 12.28 71.61 0.64 0.78
2 A' 3034 2904 45.88 203.13 0.02 0.03
3 A' 2396 2294 1117.57 2.13 0.02 0.04
4 A' 1526 1461 1.38 15.87 0.14 0.25
5 A' 1484 1420 12.63 13.38 0.48 0.65
6 A' 1454 1392 29.43 11.98 0.25 0.40
7 A' 1153 1104 17.22 0.62 0.74 0.85
8 A' 889 851 27.36 8.20 0.11 0.19
9 A' 647 620 29.26 0.56 0.52 0.68
10 A' 168 161 17.37 2.23 0.64 0.78
11 A" 3098 2966 16.46 70.58 0.75 0.86
12 A" 1502 1437 7.85 7.49 0.75 0.86
13 A" 1129 1081 0.01 0.28 0.75 0.86
14 A" 604 578 21.89 0.50 0.75 0.86
15 A" 42 40 1.95 0.73 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11124.7 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 10649.7 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 B3PW91/6-311+G(3df,2p)
ABC
2.78600 0.14524 0.14173

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.312 1.140 0.000
N2 0.000 0.568 0.000
C3 -0.548 -0.494 0.000
O4 -1.194 -1.469 0.000
H5 1.229 2.225 0.000
H6 1.871 0.838 0.888
H7 1.871 0.838 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43112.47563.61791.08851.09171.0917
N21.43111.19512.36172.06282.08852.0885
C32.47561.19511.17013.24802.90072.9007
O43.61792.36171.17014.41813.93813.9381
H51.08852.06283.24804.41811.76771.7677
H61.09172.08852.90073.93811.76771.7758
H71.09172.08852.90073.93811.76771.7758

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.837 N2 C1 H5 109.152
N2 C1 H6 111.040 N2 C1 H7 111.040
N2 C3 O4 173.764 H5 C1 H6 108.344
H5 C1 H7 108.344 H6 C1 H7 108.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.072      
2 N -1.009      
3 C 1.220      
4 O -0.662      
5 H 0.122      
6 H 0.128      
7 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.475 1.664 0.000 2.982
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.590 -0.648 0.000
y -0.648 -24.869 0.000
z 0.000 0.000 -22.559
Traceless
 xyz
x 1.124 -0.648 0.000
y -0.648 -2.294 0.000
z 0.000 0.000 1.171
Polar
3z2-r22.341
x2-y22.279
xy-0.648
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.474 1.915 0.000
y 1.915 6.306 0.000
z 0.000 0.000 3.800


<r2> (average value of r2) Å2
<r2> 83.351
(<r2>)1/2 9.130