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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP4=FULL/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes Cs 1A'
Energy calculated at MP4=FULL/Def2TZVPP
 hartrees
Energy at 0K-207.756386
Energy at 298.15K 
HF Energy-206.873985
Nuclear repulsion energy103.635205
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 MP4=FULL/Def2TZVPP
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' 3153 3153        
2 A' 3052 3052        
3 A' 2298 2298        
4 A' 1510 1510        
5 A' 1469 1469        
6 A' 1421 1421        
7 A' 1162 1162        
8 A' 877 877        
9 A' 632 632        
10 A' 186 186        
11 A" 3125 3125        
12 A" 1519 1519        
13 A" 1140 1140        
14 A" 574 574        
15 A" 69 69        

Unscaled Zero Point Vibrational Energy (zpe) 11093.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11093.1 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 MP4=FULL/Def2TZVPP
ABC
2.42421 0.14611 0.14147

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.384 1.039 0.000
N2 0.000 0.617 0.000
C3 -0.571 -0.453 0.000
O4 -1.261 -1.415 0.000
H5 1.414 2.124 0.000
H6 1.898 0.675 0.887
H7 1.898 0.675 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44672.45893.60801.08531.08841.0884
N21.44671.21262.39162.06632.09602.0960
C32.45891.21261.18423.25242.85542.8554
O43.60802.39161.18424.43613.89013.8901
H51.08532.06633.25244.43611.76721.7672
H61.08842.09602.85543.89011.76721.7744
H71.08842.09602.85543.89011.76721.7744

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 135.042 N2 C1 H5 108.547
N2 C1 H6 110.749 N2 C1 H7 110.749
N2 C3 O4 172.425 H5 C1 H6 108.776
H5 C1 H7 108.776 H6 C1 H7 109.196
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability