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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBEultrafine/aug-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/aug-cc-pVTZ
 hartrees
Energy at 0K-207.833765
Energy at 298.15K 
HF Energy-207.833765
Nuclear repulsion energy103.474319
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/aug-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' 3050 3016 11.83 78.33 0.63 0.77
2 A' 2960 2927 49.25 249.22 0.02 0.04
3 A' 2314 2288 921.13 1.95 0.05 0.10
4 A' 1466 1450 0.77 14.06 0.13 0.23
5 A' 1432 1416 12.93 16.47 0.42 0.59
6 A' 1401 1385 26.71 19.36 0.22 0.36
7 A' 1114 1102 15.98 0.62 0.75 0.86
8 A' 862 853 23.92 7.74 0.11 0.20
9 A' 612 605 22.45 0.78 0.47 0.64
10 A' 175 173 15.77 2.92 0.59 0.74
11 A" 3020 2986 17.07 81.77 0.75 0.86
12 A" 1452 1436 6.99 7.98 0.75 0.86
13 A" 1088 1076 0.00 0.23 0.75 0.86
14 A" 560 554 14.92 0.57 0.75 0.86
15 A" 51 51 1.69 0.75 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 10778.4 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 10657.7 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/aug-cc-pVTZ
ABC
2.69268 0.14336 0.13975

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.329 1.133 0.000
N2 0.000 0.582 0.000
C3 -0.549 -0.493 0.000
O4 -1.215 -1.472 0.000
H5 1.263 2.227 0.000
H6 1.888 0.820 0.894
H7 1.888 0.820 -0.894

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43872.48443.64141.09631.09971.0997
N21.43871.20782.38712.07332.10232.1023
C32.48441.20781.18413.26832.90902.9090
O43.64142.38711.18414.45243.96013.9601
H51.09632.07333.26834.45241.78031.7803
H61.09972.10232.90903.96011.78031.7887
H71.09972.10232.90903.96011.78031.7887

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 139.522 N2 C1 H5 109.000
N2 C1 H6 111.126 N2 C1 H7 111.126
N2 C3 O4 172.802 H5 C1 H6 108.336
H5 C1 H7 108.336 H6 C1 H7 108.834
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.410      
2 N 0.106      
3 C -0.171      
4 O -0.284      
5 H 0.265      
6 H 0.247      
7 H 0.247      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.410 1.584 0.000 2.883
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.833 -0.547 0.000
y -0.547 -24.992 0.000
z 0.000 0.000 -22.858
Traceless
 xyz
x 1.092 -0.547 0.000
y -0.547 -2.146 0.000
z 0.000 0.000 1.054
Polar
3z2-r22.108
x2-y22.159
xy-0.547
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.948 2.018 0.000
y 2.018 6.666 0.000
z 0.000 0.000 4.101


<r2> (average value of r2) Å2
<r2> 84.438
(<r2>)1/2 9.189