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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP4/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 MP4/cc-pVDZ
 hartrees
Energy at 0K-150.800819
Energy at 298.15K-150.808920
HF Energy-150.255448
Counterpoise corrected energy-150.800819
CP Energy at 298.15K-150.808920
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.718898
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 MP4/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 3453 3339        
2 A1 3069 2967        
3 A1 1662 1607        
4 A1 1485 1435        
5 A1 1146 1108        
6 A1 909 879        
7 A1 452 437        
8 A2 3543 3426        
9 A2 1404 1357        
10 A2 1087 1051        
11 A2 286 277        
12 B1 3541 3424        
13 B1 3125 3021        
14 B1 1386 1340        
15 B1 858 829        
16 B1 417 403        
17 B2 3454 3340        
18 B2 1655 1600        
19 B2 1390 1344        
20 B2 1113 1077        
21 B2 882 853        

Unscaled Zero Point Vibrational Energy (zpe) 18157.9 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 17556.9 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 MP4/cc-pVDZ
ABC
1.15596 0.30246 0.27275

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.560
N2 0.000 1.267 -0.182
N3 0.000 -1.267 -0.182
H4 0.890 0.000 1.217
H5 -0.890 0.000 1.217
H6 0.812 1.270 -0.811
H7 -0.812 1.270 -0.811
H8 -0.812 -1.270 -0.811
H9 0.812 -1.270 -0.811

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46901.46901.10601.10602.03802.03802.03802.0380
N21.46902.53472.08732.08731.02741.02742.73702.7370
N31.46902.53472.08732.08732.73702.73701.02741.0274
H41.10602.08732.08731.77942.39452.93682.93682.3945
H51.10602.08732.08731.77942.93682.39452.39452.9368
H62.03801.02742.73702.39452.93681.62463.01432.5390
H72.03801.02742.73702.93682.39451.62462.53903.0143
H82.03802.73701.02742.93682.39453.01432.53901.6246
H92.03802.73701.02742.39452.93682.53903.01431.6246

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.146 C1 N2 H7 108.146
C1 N3 H8 108.146 C1 N3 H9 108.146
N2 C1 N3 119.253 N2 C1 H4 107.479
N2 C1 H5 107.479 N3 C1 H4 107.479
N3 C1 H5 107.479 H4 C1 H5 107.115
H6 N2 H7 104.487 H8 N3 H9 104.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability