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: MP2=FULL/6-311G*

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 yes CS 1A'
1 3 no C*V LiNC 1Σ

Conformer 1 (C*V LiCN)

Jump to S1C2 S1C3
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-100.149424
Energy at 298.15K-100.148451
HF Energy-99.795390
Nuclear repulsion energy27.326234
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 MP2=FULL/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2059 1950 31.17      
2 Σ 632 599 117.62      
3 Π 160 151 46.58      
3 Π 160 151 46.58      

Unscaled Zero Point Vibrational Energy (zpe) 1505.4 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 1425.8 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 MP2=FULL/6-311G*
B
0.37345

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.076
C2 0.000 0.000 -0.158
N3 0.000 0.000 1.025

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.91833.1019
C21.91831.1836
N33.10191.1836

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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-100.153288
Energy at 298.15K-100.152591
HF Energy-99.802055
Nuclear repulsion energy29.109576
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 MP2=FULL/6-311G*
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' 1984 1879 9.23      
2 A' 650 615 155.99      
3 A' 217 205 27.49      

Unscaled Zero Point Vibrational Energy (zpe) 1425.0 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 1349.6 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 MP2=FULL/6-311G*
ABC
1.92435 0.84028 0.58489

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.428 -0.593 0.000
C2 -0.714 -0.376 0.000
N3 0.000 0.576 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.15331.8458
C22.15331.1907
N31.84581.1907

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 58.914 Li1 N3 C2 87.551
C2 Li1 N3 33.536
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-100.149846
Energy at 298.15K-100.148609
HF Energy-99.807298
Nuclear repulsion energy28.127621
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 MP2=FULL/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2055 1947 95.70      
2 Σ 707 670 159.77      
3 Π 72 68 26.88      
3 Π 72 68 26.88      

Unscaled Zero Point Vibrational Energy (zpe) 1453.4 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 1376.5 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 MP2=FULL/6-311G*
B
0.43040

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.894
C2 0.000 0.000 -1.078
N3 0.000 0.000 0.112

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.97171.7823
C22.97171.1893
N31.78231.1893

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