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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: QCISD(T)=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at QCISD(T)=FULL/6-31+G**
 hartrees
Energy at 0K-207.472055
Energy at 298.15K 
HF Energy-206.796287
Nuclear repulsion energy103.205436
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 QCISD(T)=FULL/6-31+G**
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' 3210 3210        
2 A' 3098 3098        
3 A' 2324 2324        
4 A' 1541 1541        
5 A' 1499 1499        
6 A' 1460 1460        
7 A' 1175 1175        
8 A' 885 885        
9 A' 618 618        
10 A' 176 176        
11 A" 3180 3180        
12 A" 1544 1544        
13 A" 1147 1147        
14 A" 566 566        
15 A" 61 61        

Unscaled Zero Point Vibrational Energy (zpe) 11241.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11241.0 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 QCISD(T)=FULL/6-31+G**
ABC
2.45318 0.14441 0.14000

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.382 1.060 0.000
N2 0.000 0.614 0.000
C3 -0.568 -0.461 0.000
O4 -1.259 -1.431 0.000
H5 1.388 2.147 0.000
H6 1.901 0.703 0.890
H7 1.901 0.703 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45252.47363.63081.08671.09021.0902
N21.45251.21622.40152.06772.10072.1007
C32.47361.21621.19063.26012.87102.8710
O43.63082.40151.19064.45043.91543.9154
H51.08672.06773.26014.45041.77221.7722
H61.09022.10072.87103.91541.77221.7799
H71.09022.10072.87103.91541.77221.7799

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 135.729 N2 C1 H5 108.171
N2 C1 H6 110.607 N2 C1 H7 110.607
N2 C3 O4 172.354 H5 C1 H6 108.990
H5 C1 H7 108.990 H6 C1 H7 109.434
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability