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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-207.051459
Energy at 298.15K 
HF Energy-206.678370
Nuclear repulsion energy102.634428
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' 3210 3002 15.46      
2 A' 3112 2910 38.91      
3 A' 2422 2265 1143.64      
4 A' 1585 1482 6.39      
5 A' 1556 1456 40.22      
6 A' 1502 1405 4.98      
7 A' 1212 1134 15.34      
8 A' 852 797 46.67      
9 A' 558 522 44.85      
10 A' 146 136 19.68      
11 A" 3184 2977 20.52      
12 A" 1592 1489 8.01      
13 A" 1205 1127 0.82      
14 A" 520 487 41.96      
15 A" 67 63 7.86      

Unscaled Zero Point Vibrational Energy (zpe) 11361.4 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 10625.2 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 CID/6-31G
ABC
3.79768 0.13494 0.13361

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 1.058 1.468 0.000
N2 0.000 0.487 0.000
C3 -0.427 -0.627 0.000
O4 -0.971 -1.704 0.000
H5 0.614 2.464 0.000
H6 1.682 1.356 0.891
H7 1.682 1.356 -0.891

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44312.56733.76481.09051.09381.0938
N21.44311.19212.39562.07062.09292.0929
C32.56731.19211.20663.26113.02873.0287
O43.76482.39561.20664.45874.14664.1466
H51.09052.07063.26114.45871.77801.7780
H61.09382.09293.02874.14661.77801.7829
H71.09382.09293.02874.14661.77801.7829

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 153.820 N2 C1 H5 108.829
N2 C1 H6 110.419 N2 C1 H7 110.419
N2 C3 O4 174.183 H5 C1 H6 108.980
H5 C1 H7 108.980 H6 C1 H7 109.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability