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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP4=FULL/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at MP4=FULL/6-311G**
 hartrees
Energy at 0K-207.616008
Energy at 298.15K 
HF Energy-206.839406
Nuclear repulsion energy103.305522
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 MP4=FULL/6-311G**
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' 3161 3039        
2 A' 3054 2936        
3 A' 2312 2223        
4 A' 1511 1453        
5 A' 1474 1418        
6 A' 1420 1365        
7 A' 1162 1117        
8 A' 886 852        
9 A' 629 605        
10 A' 191 184        
11 A" 3128 3008        
12 A" 1518 1460        
13 A" 1138 1095        
14 A" 568 546        
15 A" 73 70        

Unscaled Zero Point Vibrational Energy (zpe) 11112.0 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 10684.2 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 MP4=FULL/6-311G**
ABC
2.31412 0.14621 0.14122

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.402 1.012 0.000
N2 0.000 0.632 0.000
C3 -0.578 -0.443 0.000
O4 -1.278 -1.400 0.000
H5 1.463 2.102 0.000
H6 1.910 0.630 0.893
H7 1.910 0.630 -0.893

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45202.45613.60501.09241.09611.0961
N21.45201.22042.40062.07382.10832.1083
C32.45611.22041.18603.26202.85232.8523
O43.60502.40061.18604.44723.88333.8833
H51.09242.07383.26204.44721.77921.7792
H61.09612.10832.85233.88331.77921.7856
H71.09612.10832.85233.88331.77921.7856

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 133.402 N2 C1 H5 108.360
N2 C1 H6 110.899 N2 C1 H7 110.899
N2 C3 O4 172.058 H5 C1 H6 108.774
H5 C1 H7 108.774 H6 C1 H7 109.082
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability