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All results from a given calculation for HCNH (methyleneazane)

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-93.533659
Energy at 298.15K-93.534844
HF Energy-93.353276
Nuclear repulsion energy28.241228
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/SDD
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' 3638 3512 239.27      
2 A' 3040 2935 1404.67      
3 A' 2600 2510 226.01      
4 A' 999 965 59.10      
5 A' 596 575 596.90      
6 A" 960 927 57.58      

Unscaled Zero Point Vibrational Energy (zpe) 5916.4 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 5711.1 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/SDD
ABC
18.14774 1.25075 1.17010

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

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 1.422 0.000
H4 -0.494 -1.392 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.21101.11962.1245
N21.21102.14271.0172
H31.11962.14272.8233
H42.12451.01722.8233

picture of methyleneazane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 144.768 H3 C1 N2 133.632
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (CS trans)

Jump to S1C1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-93.542503
Energy at 298.15K-93.543808
HF Energy-93.363281
Nuclear repulsion energy28.192531
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/SDD
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' 3655 3528 190.13      
2 A' 3036 2931 676.81      
3 A' 2603 2513 713.22      
4 A' 1189 1148 13.57      
5 A' 760 733 705.77      
6 A" 1037 1001 302.80      

Unscaled Zero Point Vibrational Energy (zpe) 6140.2 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 5927.1 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/SDD
ABC
16.29431 1.26951 1.17775

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

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 -1.250 0.000

Atom - Atom Distances (Å)
  C1 N2 H3 H4
C11.22221.11202.0497
N21.22222.06661.0188
H31.11202.06663.0372
H42.04971.01883.0372

picture of methyleneazane state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H4 132.110 H3 C1 N2 124.531
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability