return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for LiCN (lithium cyanide)

using model chemistry: MP4=FULL/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C*V LiCN 1Σ
1 2 no CS 1A'
1 3 yes C*V LiNC 1Σ

Conformer 1 (C*V LiCN)

Jump to S1C2 S1C3
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-99.430225
Energy at 298.15K-99.429367
HF Energy-99.203275
Nuclear repulsion energy26.998267
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 2001 1958        
2 Σ 645 631        
3 Π 195 191        
3 Π 195 191        

Unscaled Zero Point Vibrational Energy (zpe) 1517.2 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 1485.0 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 MP4=FULL/3-21G
B
0.36424

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.103
C2 0.000 0.000 -0.159
N3 0.000 0.000 1.038

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.94383.1409
C21.94381.1971
N33.14091.1971

picture of lithium cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 C2 N3 180.000 Li1 N3 C2 0.000
C2 Li1 N3 0.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS)

Jump to S1C1 S1C3
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-99.438603
Energy at 298.15K-99.437803
HF Energy-99.220467
Nuclear repulsion energy27.788671
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 760 744        
2 A' 120 117        
3 A' 1900 1859        

Unscaled Zero Point Vibrational Energy (zpe) 1389.5 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 1360.0 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 MP4=FULL/3-21G
B
0.42520

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.008 1.899 0.000
C2 -0.004 -1.090 0.000
N3 0.000 0.121 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.98881.7777
C22.98881.2112
N31.77771.2112

picture of lithium cyanide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 C2 N3 0.043 Li1 N3 C2 179.928
C2 Li1 N3 0.029
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-99.438603
Energy at 298.15K-99.437559
HF Energy-99.220398
Nuclear repulsion energy27.782778
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/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 1899 1859        
2 Σ 760 744        
3 Π 120 118        
3 Π 120 118        

Unscaled Zero Point Vibrational Energy (zpe) 1449.7 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 1418.9 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/3-21G
B
0.42514

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.899
C2 0.000 0.000 -1.090
N3 0.000 0.000 0.121

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.98911.7778
C22.98911.2112
N31.77781.2112

picture of lithium cyanide state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Li1 C2 N3 0.000 Li1 N3 C2 180.000
C2 Li1 N3 0.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability