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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-207.410206
Energy at 298.15K 
HF Energy-206.793534
Nuclear repulsion energy103.782958
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 CCD/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3233 3032 17.05      
2 A' 3127 2931 43.92      
3 A' 2422 2271 1112.50      
4 A' 1565 1467 1.78      
5 A' 1535 1439 7.47      
6 A' 1516 1422 48.85      
7 A' 1191 1117 25.46      
8 A' 915 858 30.99      
9 A' 646 606 34.45      
10 A' 167 157 20.66      
11 A" 3208 3008 22.03      
12 A" 1568 1470 4.06      
13 A" 1164 1092 0.63      
14 A" 592 555 31.05      
15 A" 52 49 2.62      

Unscaled Zero Point Vibrational Energy (zpe) 11450.8 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 10736.3 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 CCD/6-31G**
ABC
2.56873 0.14516 0.14105

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.360 1.083 0.000
N2 0.000 0.596 0.000
C3 -0.564 -0.470 0.000
O4 -1.238 -1.439 0.000
H5 1.338 2.169 0.000
H6 1.893 0.744 0.888
H7 1.893 0.744 -0.888

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44462.47243.62051.08621.08931.0893
N21.44461.20572.38142.06522.09562.0956
C32.47241.20571.18003.25292.88022.8802
O43.62052.38141.18004.43283.91813.9181
H51.08622.06523.25294.43281.76821.7682
H61.08932.09562.88023.91811.76821.7752
H71.08932.09562.88023.91811.76821.7752

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.592 N2 C1 H5 108.546
N2 C1 H6 110.811 N2 C1 H7 110.811
N2 C3 O4 173.036 H5 C1 H6 108.736
H5 C1 H7 108.736 H6 C1 H7 109.149
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability