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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP3=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 MP3=FULL/TZVP
 hartrees
Energy at 0K-207.574433
Energy at 298.15K 
HF Energy-206.860913
Nuclear repulsion energy104.599697
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 MP3=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' 3207 2994 14.44      
2 A' 3104 2898 43.37      
3 A' 2435 2274 1395.51      
4 A' 1570 1466 1.73      
5 A' 1526 1425 7.59      
6 A' 1510 1410 45.70      
7 A' 1193 1114 26.16      
8 A' 915 855 34.11      
9 A' 674 629 38.51      
10 A' 162 151 22.17      
11 A" 3176 2966 20.74      
12 A" 1535 1434 6.04      
13 A" 1165 1088 0.99      
14 A" 630 588 34.37      
15 A" 57 53 2.46      

Unscaled Zero Point Vibrational Energy (zpe) 11429.0 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 10671.3 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 MP3=FULL/TZVP
ABC
2.55758 0.14771 0.14341

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.362 1.061 0.000
N2 0.000 0.590 0.000
C3 -0.573 -0.457 0.000
O4 -1.234 -1.416 0.000
H5 1.356 2.146 0.000
H6 1.890 0.715 0.887
H7 1.890 0.715 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44122.45913.58801.08481.08841.0884
N21.44121.19302.35482.06402.09122.0912
C32.45911.19301.16493.23942.86772.8677
O43.58802.35481.16494.40383.88393.8839
H51.08482.06403.23944.40381.76591.7659
H61.08842.09122.86773.88391.76591.7733
H71.08842.09122.86773.88391.76591.7733

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 137.786 N2 C1 H5 108.771
N2 C1 H6 110.753 N2 C1 H7 110.753
N2 C3 O4 174.120 H5 C1 H6 108.701
H5 C1 H7 108.701 H6 C1 H7 109.110
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability