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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: B3LYP/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 B3LYP/6-31G
 hartrees
Energy at 0K-207.913370
Energy at 298.15K 
HF Energy-207.913370
Nuclear repulsion energy102.607652
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 B3LYP/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' 3138 3018 17.66 97.11 0.65 0.79
2 A' 3044 2928 48.62 191.00 0.02 0.04
3 A' 2407 2316 851.72 10.89 0.20 0.33
4 A' 1539 1480 6.01 22.14 0.75 0.86
5 A' 1516 1458 32.45 16.20 0.64 0.78
6 A' 1470 1414 3.35 51.53 0.33 0.50
7 A' 1183 1138 7.55 2.32 0.71 0.83
8 A' 837 805 37.95 5.18 0.27 0.43
9 A' 527 507 27.21 0.60 0.42 0.59
10 A' 125 120 14.52 2.18 0.74 0.85
11 A" 3110 2992 23.27 86.00 0.75 0.86
12 A" 1546 1487 8.99 26.86 0.75 0.86
13 A" 1164 1120 0.00 2.10 0.75 0.86
14 A" 507 488 27.71 0.69 0.75 0.86
15 A" 48 46 7.00 2.20 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11079.4 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 10658.4 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 B3LYP/6-31G
ABC
3.93600 0.13452 0.13336

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.003 1.503 0.000
N2 0.000 0.483 0.000
C3 -0.406 -0.643 0.000
O4 -0.923 -1.735 0.000
H5 0.525 2.485 0.000
H6 1.638 1.428 0.890
H7 1.638 1.428 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43032.56663.76691.09271.09601.0960
N21.43031.19652.40202.07012.09022.0902
C32.56661.19651.20833.26353.04283.0428
O43.76692.40201.20834.46164.16584.1658
H51.09272.07013.26354.46161.77451.7745
H61.09602.09023.04284.16581.77451.7802
H71.09602.09023.04284.16581.77451.7802

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 155.327 N2 C1 H5 109.549
N2 C1 H6 110.969 N2 C1 H7 110.969
N2 C3 O4 174.539 H5 C1 H6 108.335
H5 C1 H7 108.335 H6 C1 H7 108.604
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.233      
2 N -0.323      
3 C 0.400      
4 O -0.378      
5 H 0.182      
6 H 0.176      
7 H 0.176      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.407 2.975 0.000 3.826
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.486 -0.598 0.000
y -0.598 -25.238 0.000
z 0.000 0.000 -22.406
Traceless
 xyz
x 1.335 -0.598 0.000
y -0.598 -2.792 0.000
z 0.000 0.000 1.457
Polar
3z2-r22.913
x2-y22.751
xy-0.598
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.439 1.779 0.000
y 1.779 6.282 0.000
z 0.000 0.000 2.528


<r2> (average value of r2) Å2
<r2> 87.654
(<r2>)1/2 9.362