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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-207.616662
Energy at 298.15K 
HF Energy-206.858221
Nuclear repulsion energy103.849306
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 CCSD(T)=FULL/TZVP
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' 3163 3024        
2 A' 3057 2923        
3 A' 2347 2244        
4 A' 1522 1455        
5 A' 1492 1426        
6 A' 1467 1402        
7 A' 1175 1123        
8 A' 888 848        
9 A' 642 614        
10 A' 176 168        
11 A" 3130 2992        
12 A" 1516 1449        
13 A" 1147 1097        
14 A" 591 565        
15 A" 67 64        

Unscaled Zero Point Vibrational Energy (zpe) 11189.5 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 10697.2 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 CCSD(T)=FULL/TZVP
ABC
2.41017 0.14679 0.14209

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.388 1.031 0.000
N2 0.000 0.613 0.000
C3 -0.578 -0.446 0.000
O4 -1.261 -1.406 0.000
H5 1.421 2.118 0.000
H6 1.903 0.663 0.890
H7 1.903 0.663 -0.890

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44992.45943.59921.08801.09171.0917
N21.44991.20662.38012.07022.10112.1011
C32.45941.20661.17773.25172.85942.8594
O43.59922.38011.17774.42853.88293.8829
H51.08802.07023.25174.42851.77281.7728
H61.09172.10112.85943.88291.77281.7798
H71.09172.10112.85943.88291.77281.7798

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 135.393 N2 C1 H5 108.474
N2 C1 H6 110.726 N2 C1 H7 110.726
N2 C3 O4 173.243 H5 C1 H6 108.838
H5 C1 H7 108.838 H6 C1 H7 109.193
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability