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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-207.420450
Energy at 298.15K 
HF Energy-206.791406
Nuclear repulsion energy103.392866
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 MP2=FULL/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' 3256 3043 13.11 73.34 0.69 0.81
2 A' 3137 2932 45.61 134.15 0.01 0.02
3 A' 2411 2253 776.94 0.49 0.11 0.20
4 A' 1562 1459 4.34 13.60 0.74 0.85
5 A' 1514 1415 30.65 10.07 0.69 0.82
6 A' 1491 1393 25.63 33.55 0.29 0.45
7 A' 1190 1112 20.35 3.44 0.61 0.75
8 A' 901 842 26.77 15.41 0.22 0.36
9 A' 623 582 24.36 0.51 0.56 0.72
10 A' 182 170 18.46 1.83 0.69 0.82
11 A" 3230 3018 17.75 61.46 0.75 0.86
12 A" 1568 1465 4.49 20.16 0.75 0.86
13 A" 1165 1088 0.17 3.10 0.75 0.86
14 A" 572 535 21.40 0.51 0.75 0.86
15 A" 70 65 2.52 1.30 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 11436.0 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 10685.8 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 MP2=FULL/6-31G**
ABC
2.58210 0.14397 0.13995

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.352 1.099 0.000
N2 0.000 0.602 0.000
C3 -0.555 -0.479 0.000
O4 -1.235 -1.456 0.000
H5 1.320 2.183 0.000
H6 1.887 0.765 0.886
H7 1.887 0.765 -0.886

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44062.47503.63551.08461.08771.0877
N21.44061.21472.39942.05982.09142.0914
C32.47501.21471.19003.25582.88042.8804
O43.63552.39941.19004.44583.93243.9324
H51.08462.05983.25584.44581.76571.7657
H61.08772.09142.88043.93241.76571.7722
H71.08772.09142.88043.93241.76571.7722

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.370 N2 C1 H5 108.490
N2 C1 H6 110.850 N2 C1 H7 110.850
N2 C3 O4 172.345 H5 C1 H6 108.745
H5 C1 H7 108.745 H6 C1 H7 109.108
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability