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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBE/TZVP

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/TZVP
 hartrees
Energy at 0K-207.828034
Energy at 298.15K 
HF Energy-207.828034
Nuclear repulsion energy103.426697
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/TZVP
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' 3054 3020 13.64 90.04 0.62 0.76
2 A' 2961 2928 50.01 215.79 0.02 0.04
3 A' 2345 2319 892.01 2.40 0.02 0.04
4 A' 1477 1460 1.06 14.33 0.13 0.23
5 A' 1438 1422 12.05 22.18 0.58 0.73
6 A' 1413 1397 27.63 27.15 0.37 0.53
7 A' 1117 1105 13.85 2.92 0.65 0.79
8 A' 861 851 27.39 6.45 0.17 0.30
9 A' 607 600 23.86 0.73 0.69 0.82
10 A' 172 170 16.03 3.02 0.68 0.81
11 A" 3022 2988 20.41 86.48 0.75 0.86
12 A" 1455 1438 7.22 17.42 0.75 0.86
13 A" 1091 1079 0.03 2.14 0.75 0.86
14 A" 565 558 20.97 0.75 0.75 0.86
15 A" 56 55 2.63 1.64 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10816.2 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 10695.1 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 PBEPBE/TZVP
ABC
2.81723 0.14229 0.13905

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.301 1.175 0.000
N2 0.000 0.568 0.000
C3 -0.539 -0.510 0.000
O4 -1.189 -1.501 0.000
H5 1.188 2.266 0.000
H6 1.875 0.888 0.895
H7 1.875 0.888 -0.895

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43542.49523.65511.09751.10111.1011
N21.43541.20602.38672.07262.10192.1019
C32.49521.20601.18473.27032.92972.9297
O43.65512.38671.18474.45483.98673.9867
H51.09752.07263.27034.45481.78121.7812
H61.10112.10192.92973.98671.78121.7899
H71.10112.10192.92973.98671.78121.7899

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 141.534 N2 C1 H5 109.096
N2 C1 H6 111.238 N2 C1 H7 111.238
N2 C3 O4 173.286 H5 C1 H6 108.221
H5 C1 H7 108.221 H6 C1 H7 108.733
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.304      
2 N -0.205      
3 C 0.318      
4 O -0.258      
5 H 0.156      
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
  2.545 1.693 0.000 3.057
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.683 -0.491 0.000
y -0.491 -25.054 0.000
z 0.000 0.000 -22.766
Traceless
 xyz
x 1.227 -0.491 0.000
y -0.491 -2.329 0.000
z 0.000 0.000 1.102
Polar
3z2-r22.204
x2-y22.371
xy-0.491
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.976 2.070 0.000
y 2.070 6.243 0.000
z 0.000 0.000 3.325


<r2> (average value of r2) Å2
<r2> 84.774
(<r2>)1/2 9.207