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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G
 hartrees
Energy at 0K-207.673754
Energy at 298.15K 
HF Energy-207.673754
Nuclear repulsion energy102.963569
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 PBE1PBE/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' 3165 3025 14.01 96.07 0.68 0.81
2 A' 3065 2930 45.26 198.34 0.02 0.03
3 A' 2466 2357 903.98 13.97 0.22 0.36
4 A' 1543 1475 5.42 16.50 0.72 0.84
5 A' 1526 1459 27.76 10.91 0.67 0.81
6 A' 1500 1434 4.20 64.95 0.39 0.56
7 A' 1186 1133 5.28 1.59 0.70 0.82
8 A' 858 821 36.97 4.93 0.28 0.44
9 A' 532 509 30.12 0.59 0.49 0.66
10 A' 107 102 14.67 2.37 0.75 0.85
11 A" 3143 3005 18.18 86.48 0.75 0.86
12 A" 1547 1479 10.93 26.15 0.75 0.86
13 A" 1171 1119 0.03 1.50 0.75 0.86
14 A" 520 497 31.04 0.74 0.75 0.86
15 A" 46 44 8.73 2.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11186.9 cm-1
Scaled (by 0.9559) Zero Point Vibrational Energy (zpe) 10693.6 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 PBE1PBE/6-31G
ABC
4.28664 0.13452 0.13372

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.869 1.583 0.000
N2 0.000 0.462 0.000
C3 -0.353 -0.675 0.000
O4 -0.799 -1.794 0.000
H5 0.283 2.505 0.000
H6 1.508 1.582 0.889
H7 1.508 1.582 -0.889

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.41772.56703.76621.09261.09541.0954
N21.41771.19082.39362.06232.07852.0785
C32.56701.19081.20473.24313.05783.0578
O43.76622.39361.20474.43314.18524.1852
H51.09262.06233.24314.43311.77311.7731
H61.09542.07853.05784.18521.77311.7781
H71.09542.07853.05784.18521.77311.7781

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 159.443 N2 C1 H5 109.803
N2 C1 H6 110.952 N2 C1 H7 110.952
N2 C3 O4 175.452 H5 C1 H6 108.267
H5 C1 H7 108.267 H6 C1 H7 108.514
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.301      
2 N -0.375      
3 C 0.460      
4 O -0.405      
5 H 0.210      
6 H 0.206      
7 H 0.206      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.149 3.266 0.000 3.910
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.443 -0.491 0.000
y -0.491 -25.176 0.000
z 0.000 0.000 -22.393
Traceless
 xyz
x 1.341 -0.491 0.000
y -0.491 -2.758 0.000
z 0.000 0.000 1.417
Polar
3z2-r22.834
x2-y22.733
xy-0.491
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.189 1.574 0.000
y 1.574 6.476 0.000
z 0.000 0.000 2.523


<r2> (average value of r2) Å2
<r2> 87.462
(<r2>)1/2 9.352