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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-207.101510
Energy at 298.15K 
HF Energy-206.675643
Nuclear repulsion energy102.026538
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' 3131 3004 15.66      
2 A' 3033 2910 39.66      
3 A' 2350 2255 1035.76      
4 A' 1550 1487 5.80      
5 A' 1518 1457 37.57      
6 A' 1460 1401 4.48      
7 A' 1181 1134 19.41      
8 A' 839 805 38.57      
9 A' 543 521 37.25      
10 A' 164 157 20.59      
11 A" 3103 2977 21.08      
12 A" 1556 1493 7.34      
13 A" 1172 1124 0.72      
14 A" 486 467 32.97      
15 A" 75 72 6.38      

Unscaled Zero Point Vibrational Energy (zpe) 11080.0 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 10631.3 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
3.43914 0.13467 0.13291

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 1.163 1.386 0.000
N2 0.000 0.514 0.000
C3 -0.464 -0.597 0.000
O4 -1.070 -1.649 0.000
H5 0.818 2.428 0.000
H6 1.776 1.212 0.898
H7 1.776 1.212 -0.898

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45322.56483.76771.09741.10101.1010
N21.45321.20422.41322.08122.10852.1085
C32.56481.20421.21393.28543.01553.0155
O43.76772.41321.21394.49274.13374.1337
H51.09742.08123.28544.49271.78971.7897
H61.10102.10853.01554.13371.78971.7951
H71.10102.10853.01554.13371.78971.7951

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 149.523 N2 C1 H5 108.562
N2 C1 H6 110.516 N2 C1 H7 110.516
N2 C3 O4 172.677 H5 C1 H6 108.999
H5 C1 H7 108.999 H6 C1 H7 109.214
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability