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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: CCSD/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-207.469962
Energy at 298.15K 
HF Energy-206.817172
Nuclear repulsion energy103.287303
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/aug-cc-pVDZ
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' 3162 3046 13.77      
2 A' 3058 2946 45.61      
3 A' 2314 2229 1194.03      
4 A' 1501 1447 2.01      
5 A' 1469 1415 12.23      
6 A' 1447 1394 40.45      
7 A' 1153 1111 26.52      
8 A' 898 865 27.84      
9 A' 662 638 29.95      
10 A' 180 173 19.95      
11 A" 3134 3019 18.86      
12 A" 1503 1448 5.62      
13 A" 1129 1088 0.56      
14 A" 600 578 21.04      
15 A" 51 49 1.53      

Unscaled Zero Point Vibrational Energy (zpe) 11130.0 cm-1
Scaled (by 0.9634) Zero Point Vibrational Energy (zpe) 10722.6 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/aug-cc-pVDZ
ABC
2.27915 0.14635 0.14127

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.412 1.002 0.000
N2 0.000 0.630 0.000
C3 -0.588 -0.435 0.000
O4 -1.281 -1.392 0.000
H5 1.478 2.098 0.000
H6 1.916 0.614 0.900
H7 1.916 0.614 -0.900

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45962.46233.60321.09861.10201.1020
N21.45961.21672.39432.08312.11692.1169
C32.46231.21671.18203.26892.86032.8603
O43.60322.39431.18204.44953.88043.8804
H51.09862.08313.26894.44951.79031.7903
H61.10202.11692.86033.88041.79031.7991
H71.10202.11692.86033.88041.79031.7991

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 133.665 N2 C1 H5 108.209
N2 C1 H6 110.686 N2 C1 H7 110.686
N2 C3 O4 173.028 H5 C1 H6 108.890
H5 C1 H7 108.890 H6 C1 H7 109.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability