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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP2/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no CS cis 2A'
1 2 yes CS trans 2A'

Conformer 1 (CS cis)

Jump to S1C2
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-93.532005
Energy at 298.15K-93.533189
HF Energy-93.353157
Nuclear repulsion energy28.236540
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/LANL2DZ
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' 3642 3507 238.30      
2 A' 3042 2929 1400.17      
3 A' 2602 2506 228.13      
4 A' 1000 963 58.76      
5 A' 595 573 595.16      
6 A" 961 925 57.97      

Unscaled Zero Point Vibrational Energy (zpe) 5920.0 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 5701.6 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/LANL2DZ
ABC
18.17579 1.25005 1.16961

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.093 0.650 0.000
N2 0.093 -0.561 0.000
H3 -0.717 1.423 0.000
H4 -0.493 -1.393 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21131.11952.1251
N21.21132.14301.0171
H31.11952.14302.8243
H42.12511.01712.8243

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 144.832 H3 C1 N2 133.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2/LANL2DZ
 hartrees
Energy at 0K-93.540792
Energy at 298.15K-93.542096
HF Energy-93.363171
Nuclear repulsion energy28.188041
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/LANL2DZ
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' 3658 3523 189.02      
2 A' 3037 2925 673.44      
3 A' 2603 2507 710.11      
4 A' 1189 1145 13.38      
5 A' 760 732 704.59      
6 A" 1037 999 301.78      

Unscaled Zero Point Vibrational Energy (zpe) 6141.6 cm-1
Scaled (by 0.9631) Zero Point Vibrational Energy (zpe) 5915.0 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 MP2/LANL2DZ
ABC
16.31543 1.26881 1.17726

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.011 0.655 0.000
N2 0.011 -0.567 0.000
H3 -0.905 1.286 0.000
H4 0.766 -1.251 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22241.11202.0503
N21.22242.06711.0187
H31.11202.06713.0378
H42.05031.01873.0378

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 132.167 H3 C1 N2 124.558
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability