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/6-31+G**

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 MP2=FULL/6-31+G**
 hartrees
Energy at 0K-100.082122
Energy at 298.15K-100.081334
HF Energy-99.776004
Nuclear repulsion energy27.194503
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/6-31+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 Σ 2067 1942 21.80      
2 Σ 630 592 126.88      
3 Π 222 208 45.56      
3 Π 222 208 45.56      

Unscaled Zero Point Vibrational Energy (zpe) 1570.3 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 1474.9 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 MP2=FULL/6-31+G**
B
0.37126

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.081
C2 0.000 0.000 -0.161
N3 0.000 0.000 1.030

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.91963.1107
C21.91961.1911
N33.11071.1911

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/6-31+G**
 hartrees
Energy at 0K-100.082134
Energy at 298.15K-100.081351
HF Energy-99.781351
Nuclear repulsion energy28.852023
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/6-31+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' 1992 1871 13.50      
2 A' 626 588 157.76      
3 A' 168 158 33.85      

Unscaled Zero Point Vibrational Energy (zpe) 1393.2 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 1308.5 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/6-31+G**
ABC
2.01069 0.78965 0.56698

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.442 -0.582 0.000
C2 -0.721 -0.380 0.000
N3 0.000 0.575 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.17221.8491
C22.17221.1969
N31.84911.1969

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 58.309 Li1 N3 C2 88.271
C2 Li1 N3 33.419
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-100.084242
Energy at 298.15K-100.083326
HF Energy-99.788426
Nuclear repulsion energy28.039645
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/6-31+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 Σ 2062 1937 95.35      
2 Σ 717 673 162.52      
3 Π 165 155 34.75      
3 Π 165 155 34.75      

Unscaled Zero Point Vibrational Energy (zpe) 1554.1 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 1459.6 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/6-31+G**
B
0.43021

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.891
C2 0.000 0.000 -1.081
N3 0.000 0.000 0.116

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.97191.7754
C22.97191.1965
N31.77541.1965

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