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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-207.385747
Energy at 298.15K 
HF Energy-206.788620
Nuclear repulsion energy103.664450
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
4/u)
Dep P Dep U
1 A' 3191 3021 14.47      
2 A' 3089 2924 39.09      
3 A' 2425 2295 1114.72      
4 A' 1557 1473 1.86      
5 A' 1531 1449 9.36      
6 A' 1508 1428 38.33      
7 A' 1184 1121 22.88      
8 A' 911 862 31.84      
9 A' 645 610 34.88      
10 A' 165 157 21.22      
11 A" 3166 2996 18.72      
12 A" 1557 1473 5.66      
13 A" 1159 1097 0.20      
14 A" 592 560 31.02      
15 A" 54 51 2.79      

Unscaled Zero Point Vibrational Energy (zpe) 11366.8 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 10758.6 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
2.58926 0.14464 0.14066

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 1.355 1.095 0.000
N2 0.000 0.591 0.000
C3 -0.562 -0.475 0.000
O4 -1.233 -1.446 0.000
H5 1.318 2.186 0.000
H6 1.894 0.760 0.893
H7 1.894 0.760 -0.893

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44582.47753.62701.09211.09521.0952
N21.44581.20492.38122.06942.10042.1004
C32.47751.20491.18063.25822.88962.8896
O43.62702.38121.18064.43883.92943.9294
H51.09212.06943.25824.43881.77851.7785
H61.09522.10042.88963.92941.77851.7859
H71.09522.10042.88963.92941.77851.7859

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.164 N2 C1 H5 108.452
N2 C1 H6 110.750 N2 C1 H7 110.750
N2 C3 O4 173.088 H5 C1 H6 108.799
H5 C1 H7 108.799 H6 C1 H7 109.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability