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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP2/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-311G*
 hartrees
Energy at 0K-150.759179
Energy at 298.15K-150.767299
HF Energy-150.272510
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.181520
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 MP2/6-311G*
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 3542 3366 2.06      
2 A1 3115 2960 38.39      
3 A1 1747 1660 70.95      
4 A1 1522 1446 0.81      
5 A1 1151 1094 39.50      
6 A1 913 868 0.54      
7 A1 467 444 5.40      
8 A2 3644 3463 0.00      
9 A2 1434 1363 0.00      
10 A2 1105 1050 0.00      
11 A2 285 271 0.00      
12 B1 3641 3460 0.00      
13 B1 3174 3016 28.01      
14 B1 1417 1346 0.69      
15 B1 866 823 0.87      
16 B1 428 407 108.01      
17 B2 3543 3367 0.11      
18 B2 1736 1649 1.66      
19 B2 1422 1351 21.62      
20 B2 1121 1065 69.77      
21 B2 853 810 490.87      

Unscaled Zero Point Vibrational Energy (zpe) 18562.2 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 17639.7 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 MP2/6-311G*
ABC
1.18708 0.30206 0.27409

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.535
N2 0.000 1.286 -0.179
N3 0.000 -1.286 -0.179
H4 0.882 0.000 1.176
H5 -0.882 0.000 1.176
H6 0.819 1.361 -0.766
H7 -0.819 1.361 -0.766
H8 -0.819 -1.361 -0.766
H9 0.819 -1.361 -0.766

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47081.47081.09041.09042.05332.05332.05332.0533
N21.47082.57202.06582.06581.01071.01072.83242.8324
N31.47082.57202.06582.06582.83242.83241.01071.0107
H41.09042.06582.06581.76382.37272.91872.91872.3727
H51.09042.06582.06581.76382.91872.37272.37272.9187
H62.05331.01072.83242.37272.91871.63803.17682.7219
H72.05331.01072.83242.91872.37271.63802.72193.1768
H82.05332.83241.01072.91872.37273.17682.72191.6380
H92.05332.83241.01072.37272.91872.72193.17681.6380

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.297 C1 N2 H7 110.297
C1 N3 H8 110.297 C1 N3 H9 110.297
N2 C1 N3 121.943 N2 C1 H4 106.583
N2 C1 H5 106.583 N3 C1 H4 106.583
N3 C1 H5 106.583 H4 C1 H5 107.948
H6 N2 H7 108.256 H8 N3 H9 108.256
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability