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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP2=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-150.758970
Energy at 298.15K-150.767093
HF Energy-150.256470
Counterpoise corrected energy-150.758970
CP Energy at 298.15K-150.767093
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.031832
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/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 A1 3501 3327 2.10      
2 A1 3109 2955 42.83      
3 A1 1663 1581 32.77      
4 A1 1495 1421 0.01      
5 A1 1148 1091 26.97      
6 A1 912 867 0.32      
7 A1 459 436 7.79      
8 A2 3601 3422 0.00      
9 A2 1415 1344 0.00      
10 A2 1091 1037 0.00      
11 A2 290 276 0.00      
12 B1 3598 3419 0.01      
13 B1 3172 3015 28.63      
14 B1 1388 1319 1.48      
15 B1 866 823 1.18      
16 B1 426 405 92.09      
17 B2 3502 3328 0.06      
18 B2 1657 1575 1.04      
19 B2 1399 1330 29.21      
20 B2 1132 1076 62.02      
21 B2 864 821 368.01      

Unscaled Zero Point Vibrational Energy (zpe) 18344.0 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 17434.2 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/cc-pVDZ
ABC
1.16763 0.30436 0.27474

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.557
N2 0.000 1.262 -0.182
N3 0.000 -1.262 -0.182
H4 0.885 0.000 1.212
H5 -0.885 0.000 1.212
H6 0.811 1.275 -0.806
H7 -0.811 1.275 -0.806
H8 -0.811 -1.275 -0.806
H9 0.811 -1.275 -0.806

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46191.46191.10181.10182.03462.03462.03462.0346
N21.46192.52382.07822.07821.02361.02362.73582.7358
N31.46192.52382.07822.07822.73582.73581.02361.0236
H41.10182.07822.07821.77082.38822.92862.92862.3882
H51.10182.07822.07821.77082.92862.38822.38822.9286
H62.03461.02362.73582.38822.92861.62253.02282.5505
H72.03461.02362.73582.92862.38821.62252.55053.0228
H82.03462.73581.02362.92862.38823.02282.55051.6225
H92.03462.73581.02362.38822.92862.55053.02281.6225

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.604 C1 N2 H7 108.604
C1 N3 H8 108.604 C1 N3 H9 108.604
N2 C1 N3 119.358 N2 C1 H4 107.486
N2 C1 H5 107.486 N3 C1 H4 107.486
N3 C1 H5 107.486 H4 C1 H5 106.948
H6 N2 H7 104.850 H8 N3 H9 104.850
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability