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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBE/6-31G**

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/6-31G**
 hartrees
Energy at 0K-207.754764
Energy at 298.15K 
HF Energy-207.754764
Nuclear repulsion energy103.011549
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/6-31G**
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' 3071 3029 15.29 86.27 0.65 0.79
2 A' 2972 2931 50.59 171.79 0.02 0.04
3 A' 2346 2314 733.43 1.50 0.04 0.08
4 A' 1478 1457 1.64 9.05 0.22 0.37
5 A' 1446 1426 9.54 26.82 0.57 0.72
6 A' 1419 1400 35.03 33.58 0.42 0.59
7 A' 1122 1107 13.83 2.89 0.63 0.77
8 A' 874 862 25.48 6.52 0.21 0.35
9 A' 593 585 20.14 0.67 0.73 0.85
10 A' 179 177 14.65 2.48 0.60 0.75
11 A" 3039 2998 21.17 79.64 0.75 0.86
12 A" 1467 1447 5.16 23.08 0.75 0.86
13 A" 1092 1077 0.18 3.21 0.75 0.86
14 A" 535 528 17.77 0.64 0.75 0.86
15 A" 54 54 2.35 1.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10843.2 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 10694.7 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 PBEPBE/6-31G**
ABC
2.65471 0.14237 0.13872

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.335 1.130 0.000
N2 0.000 0.591 0.000
C3 -0.545 -0.497 0.000
O4 -1.226 -1.475 0.000
H5 1.278 2.229 0.000
H6 1.897 0.816 0.896
H7 1.897 0.816 -0.896

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43942.48613.65301.10011.10361.1036
N21.43941.21712.40272.07682.11022.1102
C32.48611.21711.19183.27882.91402.9140
O43.65302.40271.19184.47053.97593.9759
H51.10012.07683.27884.47051.78391.7839
H61.10362.11022.91403.97591.78391.7922
H71.10362.11022.91403.97591.78391.7922

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.582 N2 C1 H5 109.004
N2 C1 H6 111.479 N2 C1 H7 111.479
N2 C3 O4 171.745 H5 C1 H6 108.093
H5 C1 H7 108.093 H6 C1 H7 108.577
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.241      
2 N -0.407      
3 C 0.573      
4 O -0.381      
5 H 0.155      
6 H 0.151      
7 H 0.151      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.397 1.426 0.000 2.789
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.980 -0.293 0.000
y -0.293 -24.183 0.000
z 0.000 0.000 -22.310
Traceless
 xyz
x 1.267 -0.293 0.000
y -0.293 -2.038 0.000
z 0.000 0.000 0.771
Polar
3z2-r21.542
x2-y22.203
xy-0.293
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.611 1.997 0.000
y 1.997 5.540 0.000
z 0.000 0.000 2.867


<r2> (average value of r2) Å2
<r2> 84.486
(<r2>)1/2 9.192