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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBEultrafine/daug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-207.783053
Energy at 298.15K 
HF Energy-207.783053
Nuclear repulsion energy103.018601
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-pVDZ
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' 3065 3065 12.37 77.89 0.65 0.79
2 A' 2963 2963 52.89 252.78 0.02 0.04
3 A' 2305 2305 881.82 1.55 0.08 0.15
4 A' 1453 1453 1.65 16.04 0.12 0.22
5 A' 1412 1412 12.31 14.33 0.47 0.64
6 A' 1380 1380 26.33 16.38 0.24 0.39
7 A' 1105 1105 16.18 0.63 0.75 0.86
8 A' 870 870 23.11 8.60 0.11 0.20
9 A' 610 610 21.20 0.94 0.41 0.58
10 A' 185 185 15.58 3.04 0.57 0.73
11 A" 3035 3035 18.58 82.92 0.75 0.86
12 A" 1431 1431 6.74 8.16 0.75 0.86
13 A" 1078 1078 0.00 0.30 0.75 0.86
14 A" 552 552 13.88 0.57 0.75 0.86
15 A" 70 70 1.59 0.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10756.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10756.3 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-pVDZ
ABC
2.54321 0.14324 0.13926

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.356 1.098 0.000
N2 0.000 0.602 0.000
C3 -0.557 -0.481 0.000
O4 -1.241 -1.455 0.000
H5 1.329 2.200 0.000
H6 1.904 0.761 0.900
H7 1.904 0.761 -0.900

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44432.48093.64211.10261.10611.1061
N21.44431.21752.40202.07902.11182.1118
C32.48091.21751.19013.27832.89992.8999
O43.64212.40201.19014.46853.95123.9512
H51.10262.07903.27834.46851.79211.7921
H61.10612.11182.89993.95121.79211.8005
H71.10612.11182.89993.95121.79211.8005

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.344 N2 C1 H5 108.687
N2 C1 H6 111.098 N2 C1 H7 111.098
N2 C3 O4 172.153 H5 C1 H6 108.460
H5 C1 H7 108.460 H6 C1 H7 108.964
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.455      
2 N 0.270      
3 C -0.172      
4 O -0.863      
5 H -0.269      
6 H -0.211      
7 H -0.211      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.433 1.468 0.000 2.842
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.861 -0.493 0.000
y -0.493 -25.067 0.000
z 0.000 0.000 -22.986
Traceless
 xyz
x 1.165 -0.493 0.000
y -0.493 -2.143 0.000
z 0.000 0.000 0.978
Polar
3z2-r21.955
x2-y22.206
xy-0.493
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.086 2.026 0.000
y 2.026 6.692 0.000
z 0.000 0.000 4.176


<r2> (average value of r2) Å2
<r2> 84.715
(<r2>)1/2 9.204