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All results from a given calculation for CH3NCO (methylisocyante)

using model chemistry: MP3=FULL/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-207.432989
Energy at 298.15K 
HF Energy-206.799335
Nuclear repulsion energy103.937801
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/6-31+G**
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' 3254 3032 12.52      
2 A' 3145 2930 46.98      
3 A' 2420 2255 1386.13      
4 A' 1568 1461 0.48      
5 A' 1541 1435 11.92      
6 A' 1518 1414 40.34      
7 A' 1193 1112 28.48      
8 A' 911 849 33.36      
9 A' 645 601 37.39      
10 A' 156 145 23.11      
11 A" 3227 3006 18.36      
12 A" 1562 1455 5.69      
13 A" 1165 1085 0.87      
14 A" 605 564 32.64      
15 A" 55 51 2.91      

Unscaled Zero Point Vibrational Energy (zpe) 11482.2 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 10696.8 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/6-31+G**
ABC
2.63942 0.14499 0.14108

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.348 1.103 0.000
N2 0.000 0.586 0.000
C3 -0.560 -0.477 0.000
O4 -1.225 -1.449 0.000
H5 1.301 2.186 0.000
H6 1.884 0.774 0.887
H7 1.884 0.774 -0.887

Atom - Atom Distances (Å)
  C1 N2 C3 O4 H5 H6 H7
C11.44392.47723.62391.08371.08691.0869
N21.44391.20132.37522.06182.09052.0905
C32.47721.20131.17783.24832.88492.8849
O43.62392.37521.17784.42603.92323.9232
H51.08372.06183.24834.42601.76601.7660
H61.08692.09052.88493.92321.76601.7738
H71.08692.09052.88493.92321.76601.7738

picture of methylisocyante state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 138.754 N2 C1 H5 108.472
N2 C1 H6 110.590 N2 C1 H7 110.590
N2 C3 O4 173.414 H5 C1 H6 108.890
H5 C1 H7 108.890 H6 C1 H7 109.366
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability