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All results from a given calculation for CH3NC (methyl isocyanide)

using model chemistry: CCSD=FULL/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCSD=FULL/cc-pVTZ
 hartrees
Energy at 0K-132.508344
Energy at 298.15K-132.510768
HF Energy-131.942382
Nuclear repulsion energy60.287106
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=FULL/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3107 2946 16.17      
2 A1 2282 2163 130.57      
3 A1 1486 1409 6.09      
4 A1 982 931 16.85      
5 E 3174 3009 5.20      
5 E 3174 3009 5.20      
6 E 1530 1451 9.49      
6 E 1530 1451 9.49      
7 E 1170 1109 0.20      
7 E 1170 1109 0.20      
8 E 283 269 0.20      
8 E 283 269 0.20      

Unscaled Zero Point Vibrational Energy (zpe) 10085.5 cm-1
Scaled (by 0.9481) Zero Point Vibrational Energy (zpe) 9562.0 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=FULL/cc-pVTZ
ABC
5.34947 0.33818 0.33818

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.106
N2 0.000 0.000 0.312
C3 0.000 0.000 1.476
H4 0.000 1.021 -1.468
H5 0.884 -0.511 -1.468
H6 -0.884 -0.511 -1.468

Atom - Atom Distances (Å)
  C1 N2 C3 H4 H5 H6
C11.41802.58181.08341.08341.0834
N21.41801.16382.05202.05202.0520
C32.58181.16383.11573.11573.1157
H41.08342.05203.11571.76881.7688
H51.08342.05203.11571.76881.7688
H61.08342.05203.11571.76881.7688

picture of methyl isocyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 C3 180.000 N2 C1 H4 109.507
N2 C1 H5 109.507 N2 C1 H6 109.507
H4 C1 H5 109.435 H4 C1 H6 109.435
H5 C1 H6 109.435
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability