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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBEultrafine/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at PBEPBEultrafine/daug-cc-pVTZ
 hartrees
Energy at 0K-207.834055
Energy at 298.15K 
HF Energy-207.834055
Nuclear repulsion energy103.474747
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 PBEPBEultrafine/daug-cc-pVTZ
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' 3049 3049 11.85 78.36 0.63 0.77
2 A' 2960 2960 49.27 250.09 0.02 0.04
3 A' 2312 2312 918.48 1.74 0.05 0.09
4 A' 1465 1465 0.80 14.00 0.13 0.22
5 A' 1432 1432 12.85 16.68 0.42 0.59
6 A' 1401 1401 26.66 19.25 0.22 0.36
7 A' 1115 1115 15.99 0.62 0.74 0.85
8 A' 862 862 23.81 7.72 0.11 0.20
9 A' 612 612 22.34 0.81 0.44 0.62
10 A' 175 175 15.75 2.89 0.58 0.73
11 A" 3019 3019 17.08 81.72 0.75 0.86
12 A" 1452 1452 6.97 7.96 0.75 0.86
13 A" 1088 1088 0.00 0.23 0.75 0.86
14 A" 560 560 14.82 0.58 0.75 0.86
15 A" 51 51 1.70 0.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10776.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10776.0 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 PBEPBEultrafine/daug-cc-pVTZ
ABC
2.68627 0.14341 0.13978

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.331 1.131 0.000
N2 0.000 0.583 0.000
C3 -0.549 -0.493 0.000
O4 -1.216 -1.471 0.000
H5 1.266 2.225 0.000
H6 1.888 0.817 0.894
H7 1.888 0.817 -0.894

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43892.48393.64081.09621.09971.0997
N21.43891.20792.38722.07342.10252.1025
C32.48391.20791.18403.26842.90822.9082
O43.64082.38721.18404.45233.95893.9589
H51.09622.07343.26844.45231.78021.7802
H61.09972.10252.90823.95891.78021.7886
H71.09972.10252.90823.95891.78021.7886

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.419 N2 C1 H5 108.999
N2 C1 H6 111.131 N2 C1 H7 111.131
N2 C3 O4 172.781 H5 C1 H6 108.333
H5 C1 H7 108.333 H6 C1 H7 108.830
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.493      
2 N -0.114      
3 C -0.002      
4 O -0.703      
5 H 0.372      
6 H 0.470      
7 H 0.470      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.409 1.574 0.000 2.877
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.827 -0.535 0.000
y -0.535 -24.979 0.000
z 0.000 0.000 -22.864
Traceless
 xyz
x 1.094 -0.535 0.000
y -0.535 -2.133 0.000
z 0.000 0.000 1.039
Polar
3z2-r22.078
x2-y22.152
xy-0.535
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.971 2.009 0.000
y 2.009 6.680 0.000
z 0.000 0.000 4.131


<r2> (average value of r2) Å2
<r2> 84.419
(<r2>)1/2 9.188