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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBE/aug-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 PBEPBE/aug-cc-pVDZ
 hartrees
Energy at 0K-207.781960
Energy at 298.15K 
HF Energy-207.781960
Nuclear repulsion energy102.996718
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/aug-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' 3070 3052 11.81 77.15 0.64 0.78
2 A' 2966 2948 51.34 244.12 0.02 0.04
3 A' 2304 2290 884.81 2.10 0.10 0.18
4 A' 1452 1443 1.56 15.48 0.13 0.24
5 A' 1409 1401 12.03 14.29 0.48 0.65
6 A' 1380 1372 26.56 16.12 0.24 0.38
7 A' 1103 1096 16.33 0.60 0.72 0.84
8 A' 870 865 23.17 8.70 0.11 0.20
9 A' 611 607 21.41 0.84 0.48 0.65
10 A' 184 183 15.60 3.11 0.60 0.75
11 A" 3037 3019 17.90 82.05 0.75 0.86
12 A" 1427 1418 6.91 8.04 0.75 0.86
13 A" 1077 1071 0.00 0.28 0.75 0.86
14 A" 551 547 14.10 0.56 0.75 0.86
15 A" 63 63 1.60 0.85 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10752.4 cm-1
Scaled (by 0.9939) Zero Point Vibrational Energy (zpe) 10686.8 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/aug-cc-pVDZ
ABC
2.54060 0.14318 0.13921

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.357 1.098 0.000
N2 0.000 0.602 0.000
C3 -0.558 -0.481 0.000
O4 -1.241 -1.455 0.000
H5 1.329 2.201 0.000
H6 1.904 0.761 0.901
H7 1.904 0.761 -0.901

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44462.48153.64281.10301.10681.1068
N21.44461.21752.40252.07932.11242.1124
C32.48151.21751.19053.27872.90072.9007
O43.64282.40251.19054.46923.95193.9519
H51.10302.07933.27874.46921.79301.7930
H61.10682.11242.90073.95191.79301.8020
H71.10682.11242.90073.95191.79301.8020

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.374 N2 C1 H5 108.672
N2 C1 H6 111.082 N2 C1 H7 111.082
N2 C3 O4 172.222 H5 C1 H6 108.470
H5 C1 H7 108.470 H6 C1 H7 108.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.902      
2 N -0.098      
3 C 0.090      
4 O -0.320      
5 H -0.279      
6 H -0.148      
7 H -0.148      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.444 1.480 0.000 2.857
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.885 -0.531 0.000
y -0.531 -25.121 0.000
z 0.000 0.000 -22.965
Traceless
 xyz
x 1.158 -0.531 0.000
y -0.531 -2.196 0.000
z 0.000 0.000 1.038
Polar
3z2-r22.076
x2-y22.236
xy-0.531
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.007 2.054 0.000
y 2.054 6.622 0.000
z 0.000 0.000 4.071


<r2> (average value of r2) Å2
<r2> 84.753
(<r2>)1/2 9.206