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

using model chemistry: QCISD/cc-pVDZ

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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-100.072545
Energy at 298.15K-100.071487
HF Energy-99.779003
Nuclear repulsion energy27.189131
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 QCISD/cc-pVDZ
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 2187 2098 10.74      
2 Σ 603 578 112.65      
3 Π 138 132 48.76      
3 Π 138 132 48.76      

Unscaled Zero Point Vibrational Energy (zpe) 1532.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 1470.0 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 QCISD/cc-pVDZ
B
0.36387

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 -2.111
C2 0.000 0.000 -0.150
N3 0.000 0.000 1.033

Atom - Atom Distances (Å)
  Li1 C2 N3
Li11.96143.1437
C21.96141.1823
N33.14371.1823

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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-100.079356
Energy at 298.15K-100.078545
HF Energy-99.788675
Nuclear repulsion energy28.702433
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 QCISD/cc-pVDZ
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' 2065 1981 38.12      
2 A' 662 635 129.81      
3 A' 137 131 31.87      

Unscaled Zero Point Vibrational Energy (zpe) 1431.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 1373.4 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 QCISD/cc-pVDZ
ABC
2.17971 0.72875 0.54615

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 1.452 -0.594 0.000
C2 -0.726 -0.373 0.000
N3 0.000 0.575 0.000

Atom - Atom Distances (Å)
  Li1 C2 N3
Li12.18921.8639
C22.18921.1940
N31.86391.1940

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 58.340 Li1 N3 C2 88.618
C2 Li1 N3 33.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (C*V LiNC)

Jump to S1C1 S1C2
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-100.078057
Energy at 298.15K-100.076589
HF Energy-99.791108
Nuclear repulsion energy27.902630
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 QCISD/cc-pVDZ
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 2105 2019 134.57      
2 Σ 704 675 150.43      
3 Π 12 12 29.18      
3 Π 12 12 29.18      

Unscaled Zero Point Vibrational Energy (zpe) 1416.5 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 1359.0 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 QCISD/cc-pVDZ
B
0.42051

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Li1 0.000 0.000 1.920
C2 0.000 0.000 -1.086
N3 0.000 0.000 0.108

Atom - Atom Distances (Å)
  Li1 C2 N3
Li13.00691.8121
C23.00691.1948
N31.81211.1948

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