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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: PBEPBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-205.028098
Energy at 298.15K 
HF Energy-205.028098
Nuclear repulsion energy100.065872
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/STO-3G
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' 3392 3099 0.05 36.18 0.71 0.83
2 A' 3210 2932 7.83 56.72 0.01 0.02
3 A' 2270 2074 154.96 0.79 0.64 0.78
4 A' 1605 1467 7.96 14.34 0.75 0.86
5 A' 1518 1387 17.60 10.16 0.70 0.82
6 A' 1364 1246 32.00 4.55 0.23 0.38
7 A' 1157 1057 10.40 3.25 0.57 0.72
8 A' 877 801 5.21 11.02 0.17 0.30
9 A' 569 520 9.02 1.07 0.73 0.84
10 A' 215 197 9.38 1.04 0.59 0.74
11 A" 3364 3074 1.38 30.63 0.75 0.86
12 A" 1613 1473 6.09 18.61 0.75 0.86
13 A" 1118 1021 0.03 2.50 0.75 0.86
14 A" 431 393 8.14 0.26 0.75 0.86
15 A" 109 99 1.74 0.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11405.4 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 10420.0 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 PBEPBE/STO-3G
ABC
1.93712 0.14099 0.13491

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.490 0.920 0.000
N2 0.000 0.710 0.000
C3 -0.563 -0.438 0.000
O4 -1.395 -1.355 0.000
H5 1.670 2.016 0.000
H6 1.964 0.481 0.907
H7 1.964 0.481 -0.907

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.50522.46253.67471.11031.11321.1132
N21.50521.27952.49252.11992.17522.1752
C32.46251.27951.23783.31852.83802.8380
O43.67472.49251.23784.55633.93393.9339
H51.11032.11993.31854.55631.80671.8067
H61.11322.17522.83803.93391.80671.8136
H71.11322.17522.83803.93391.80671.8136

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 124.133 N2 C1 H5 107.328
N2 C1 H6 111.473 N2 C1 H7 111.473
N2 C3 O4 163.898 H5 C1 H6 108.692
H5 C1 H7 108.692 H6 C1 H7 109.094
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.150      
2 N -0.234      
3 C 0.196      
4 O -0.118      
5 H 0.106      
6 H 0.100      
7 H 0.100      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.861 0.186 0.000 1.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.931 0.118 0.000
y 0.118 -22.346 0.000
z 0.000 0.000 -20.806
Traceless
 xyz
x 1.646 0.118 0.000
y 0.118 -1.978 0.000
z 0.000 0.000 0.332
Polar
3z2-r20.664
x2-y22.416
xy0.118
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.087 1.714 0.000
y 1.714 3.235 0.000
z 0.000 0.000 1.213


<r2> (average value of r2) Å2
<r2> 85.067
(<r2>)1/2 9.223