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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-207.310574
Energy at 298.15K 
HF Energy-206.790306
Nuclear repulsion energy104.243421
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 CID/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' 3272 3022 15.36      
2 A' 3169 2927 39.46      
3 A' 2482 2293 1261.13      
4 A' 1601 1479 1.33      
5 A' 1574 1454 9.88      
6 A' 1548 1430 42.03      
7 A' 1217 1124 23.08      
8 A' 927 856 37.26      
9 A' 667 616 42.16      
10 A' 156 145 21.77      
11 A" 3246 2998 19.89      
12 A" 1596 1474 5.67      
13 A" 1192 1101 0.36      
14 A" 625 577 38.78      
15 A" 49 45 3.19      

Unscaled Zero Point Vibrational Energy (zpe) 11659.6 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 10770.0 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 CID/6-31G*
ABC
2.74326 0.14513 0.14151

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.326 1.129 0.000
N2 0.000 0.572 0.000
C3 -0.553 -0.487 0.000
O4 -1.204 -1.463 0.000
H5 1.246 2.212 0.000
H6 1.874 0.818 0.887
H7 1.874 0.818 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.43832.47863.62171.08541.08841.0884
N21.43831.19472.36382.05972.08812.0881
C32.47861.19471.17253.24372.89522.8952
O43.62172.36381.17254.41613.93223.9322
H51.08542.05973.24374.41611.76731.7673
H61.08842.08812.89523.93221.76731.7746
H71.08842.08812.89523.93221.76731.7746

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 140.382 N2 C1 H5 108.597
N2 C1 H6 110.703 N2 C1 H7 110.703
N2 C3 O4 173.858 H5 C1 H6 108.784
H5 C1 H7 108.784 H6 C1 H7 109.224
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability