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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: HF/STO-3G

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/STO-3G
 hartrees
Energy at 0K-204.083836
Energy at 298.15K 
HF Energy-204.083836
Nuclear repulsion energy103.103504
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/STO-3G
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' 3738 3052 0.01 37.70 0.70 0.83
2 A' 3542 2892 5.48 42.77 0.01 0.01
3 A' 2512 2051 652.47 2.02 0.44 0.61
4 A' 1796 1466 4.70 15.28 0.74 0.85
5 A' 1721 1405 46.51 6.49 0.75 0.86
6 A' 1572 1283 43.37 2.23 0.36 0.53
7 A' 1300 1062 27.60 3.57 0.55 0.71
8 A' 1022 834 12.11 18.36 0.21 0.35
9 A' 677 553 33.34 0.41 0.75 0.85
10 A' 213 174 15.30 0.62 0.67 0.80
11 A" 3713 3031 0.89 28.91 0.75 0.86
12 A" 1807 1475 4.36 20.22 0.75 0.86
13 A" 1271 1038 3.24 2.44 0.75 0.86
14 A" 542 443 39.04 0.47 0.75 0.86
15 A" 92 75 1.86 0.39 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 12758.3 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 10417.1 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/STO-3G
ABC
1.90982 0.15094 0.14368

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.473 0.847 0.000
N2 0.000 0.699 0.000
C3 -0.594 -0.384 0.000
O4 -1.352 -1.297 0.000
H5 1.704 1.912 0.000
H6 1.920 0.395 0.888
H7 1.920 0.395 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.48062.40603.54651.08971.09261.0926
N21.48061.23472.41042.09152.13732.1373
C32.40601.23471.18663.24812.77792.7779
O43.54652.41041.18664.43103.78913.7891
H51.08972.09153.24814.43101.77171.7717
H61.09262.13732.77793.78911.77171.7769
H71.09262.13732.77793.78911.77171.7769

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 124.521 N2 C1 H5 107.957
N2 C1 H6 111.439 N2 C1 H7 111.439
N2 C3 O4 169.080 H5 C1 H6 108.553
H5 C1 H7 108.553 H6 C1 H7 108.813
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.074      
2 N -0.327      
3 C 0.376      
4 O -0.222      
5 H 0.089      
6 H 0.079      
7 H 0.079      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.068 0.061 0.000 2.069
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.831 -0.817 0.000
y -0.817 -23.887 0.000
z 0.000 0.000 -20.813
Traceless
 xyz
x 1.519 -0.817 0.000
y -0.817 -3.065 0.000
z 0.000 0.000 1.546
Polar
3z2-r23.092
x2-y23.056
xy-0.817
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.866 1.627 0.000
y 1.627 3.037 0.000
z 0.000 0.000 1.154


<r2> (average value of r2) Å2
<r2> 81.287
(<r2>)1/2 9.016