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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP3=FULL/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 MP3=FULL/aug-cc-pVDZ
 hartrees
Energy at 0K-207.470005
Energy at 298.15K 
HF Energy-206.818548
Nuclear repulsion energy103.667552
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/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' 3190 3190 12.91      
2 A' 3085 3085 44.62      
3 A' 2363 2363 1364.17      
4 A' 1527 1527 2.42      
5 A' 1489 1489 9.99      
6 A' 1460 1460 40.24      
7 A' 1159 1159 27.27      
8 A' 910 910 27.90      
9 A' 672 672 32.94      
10 A' 174 174 21.06      
11 A" 3162 3162 17.67      
12 A" 1510 1510 6.06      
13 A" 1136 1136 0.46      
14 A" 613 613 23.31      
15 A" 49 49 1.61      

Unscaled Zero Point Vibrational Energy (zpe) 11249.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 11249.4 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/aug-cc-pVDZ
ABC
2.34288 0.14686 0.14198

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.400 1.014 0.000
N2 0.000 0.620 0.000
C3 -0.585 -0.440 0.000
O4 -1.271 -1.395 0.000
H5 1.452 2.108 0.000
H6 1.912 0.636 0.897
H7 1.912 0.636 -0.897

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.45462.46093.59651.09611.09961.0996
N21.45461.21102.38192.07952.11192.1119
C32.46091.21101.17513.26292.86322.8632
O43.59652.38191.17514.43693.88033.8803
H51.09612.07953.26294.43691.78471.7847
H61.09962.11192.86323.88031.78471.7940
H71.09962.11192.86323.88031.78471.7940

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 134.599 N2 C1 H5 108.404
N2 C1 H6 110.783 N2 C1 H7 110.783
N2 C3 O4 173.202 H5 C1 H6 108.744
H5 C1 H7 108.744 H6 C1 H7 109.330
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability