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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: HF/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at HF/6-31+G**
 hartrees
Energy at 0K-206.801123
Energy at 298.15K 
HF Energy-206.801123
Nuclear repulsion energy104.863818
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 HF/6-31+G**
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' 3307 2990 20.11 80.57 0.67 0.80
2 A' 3208 2901 51.24 161.25 0.01 0.02
3 A' 2527 2285 1801.49 4.72 0.03 0.06
4 A' 1653 1495 1.87 8.64 0.11 0.20
5 A' 1614 1460 11.96 16.32 0.58 0.73
6 A' 1586 1434 50.67 11.64 0.46 0.63
7 A' 1255 1135 28.36 2.02 0.64 0.78
8 A' 915 828 53.63 9.79 0.15 0.25
9 A' 704 636 62.88 0.45 0.58 0.73
10 A' 119 108 25.25 1.60 0.72 0.83
11 A" 3279 2965 26.90 75.12 0.75 0.86
12 A" 1632 1476 5.86 13.90 0.75 0.86
13 A" 1233 1115 1.43 1.24 0.75 0.86
14 A" 682 617 57.66 0.97 0.75 0.86
15 A" 36 32 4.45 1.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11875.2 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 10737.5 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 HF/6-31+G**
ABC
3.10690 0.14432 0.14156

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.259 1.221 0.000
N2 0.000 0.528 0.000
C3 -0.531 -0.524 0.000
O4 -1.137 -1.512 0.000
H5 1.069 2.284 0.000
H6 1.830 0.966 0.883
H7 1.830 0.966 -0.883

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43722.49953.63471.07961.08281.0828
N21.43721.17782.33522.05622.07912.0791
C32.49951.17781.15943.23172.92832.9283
O43.63472.33521.15944.39073.96583.9658
H51.07962.05623.23174.39071.76001.7600
H61.08282.07912.92833.96581.76001.7669
H71.08282.07912.92833.96581.76001.7669

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 145.640 N2 C1 H5 108.739
N2 C1 H6 110.401 N2 C1 H7 110.401
N2 C3 O4 175.243 H5 C1 H6 108.957
H5 C1 H7 108.957 H6 C1 H7 109.352
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.231      
2 N -0.436      
3 C 0.748      
4 O -0.525      
5 H 0.151      
6 H 0.146      
7 H 0.146      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.867 2.117 0.000 3.563
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.888 -0.842 0.000
y -0.842 -25.704 0.000
z 0.000 0.000 -22.722
Traceless
 xyz
x 1.325 -0.842 0.000
y -0.842 -2.899 0.000
z 0.000 0.000 1.574
Polar
3z2-r23.148
x2-y22.816
xy-0.842
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.248 1.727 0.000
y 1.727 5.682 0.000
z 0.000 0.000 3.029


<r2> (average value of r2) Å2
<r2> 83.710
(<r2>)1/2 9.149