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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3PW91/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at B3PW91/6-311G*
 hartrees
Energy at 0K-207.960573
Energy at 298.15K 
HF Energy-207.960573
Nuclear repulsion energy104.207608
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 B3PW91/6-311G*
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' 3137 3020 20.22      
2 A' 3039 2926 51.37      
3 A' 2419 2329 1021.44      
4 A' 1533 1476 1.78      
5 A' 1499 1444 13.24      
6 A' 1471 1416 30.37      
7 A' 1163 1119 14.69      
8 A' 894 861 31.59      
9 A' 642 618 29.66      
10 A' 169 163 17.22      
11 A" 3105 2989 27.19      
12 A" 1521 1464 7.65      
13 A" 1138 1095 0.01      
14 A" 599 577 26.91      
15 A" 55 53 2.65      

Unscaled Zero Point Vibrational Energy (zpe) 11192.0 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 10774.6 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 B3PW91/6-311G*
ABC
2.76328 0.14497 0.14143

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.316 1.137 0.000
N2 0.000 0.571 0.000
C3 -0.550 -0.493 0.000
O4 -1.199 -1.468 0.000
H5 1.237 2.224 0.000
H6 1.876 0.833 0.889
H7 1.876 0.833 -0.889

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43292.47763.62081.09021.09381.0938
N21.43291.19742.36512.06492.09292.0929
C32.47761.19741.17133.25202.90442.9044
O43.62082.36511.17134.42323.94233.9423
H51.09022.06493.25204.42321.77031.7703
H61.09382.09292.90443.94231.77031.7785
H71.09382.09292.90443.94231.77031.7785

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.593 N2 C1 H5 109.095
N2 C1 H6 111.144 N2 C1 H7 111.144
N2 C3 O4 173.683 H5 C1 H6 108.299
H5 C1 H7 108.299 H6 C1 H7 108.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.538      
2 N -0.395      
3 C 0.507      
4 O -0.297      
5 H 0.246      
6 H 0.239      
7 H 0.239      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.516 1.565 0.000 2.963
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.217 -0.497 0.000
y -0.497 -24.605 0.000
z 0.000 0.000 -22.364
Traceless
 xyz
x 1.267 -0.497 0.000
y -0.497 -2.314 0.000
z 0.000 0.000 1.047
Polar
3z2-r22.094
x2-y22.387
xy-0.497
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.470 1.865 0.000
y 1.865 5.460 0.000
z 0.000 0.000 2.919


<r2> (average value of r2) Å2
<r2> 83.329
(<r2>)1/2 9.128