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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP4=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 MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-150.807879
Energy at 298.15K-150.815983
HF Energy-150.255663
Nuclear repulsion energy82.783233
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=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 3458 3337        
2 A1 3074 2967        
3 A1 1664 1606        
4 A1 1487 1435        
5 A1 1147 1107        
6 A1 910 878        
7 A1 453 437        
8 A2 3549 3425        
9 A2 1406 1357        
10 A2 1089 1051        
11 A2 286 276        
12 B1 3546 3423        
13 B1 3130 3021        
14 B1 1387 1338        
15 B1 859 829        
16 B1 417 403        
17 B2 3459 3338        
18 B2 1657 1599        
19 B2 1392 1344        
20 B2 1116 1077        
21 B2 881 851        

Unscaled Zero Point Vibrational Energy (zpe) 18183.9 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 17549.3 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=FULL/cc-pVDZ
ABC
1.15792 0.30290 0.27316

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/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 1.266 -0.182
N3 0.000 -1.266 -0.182
H4 0.889 0.000 1.217
H5 -0.889 0.000 1.217
H6 0.812 1.270 -0.810
H7 -0.812 1.270 -0.810
H8 -0.812 -1.270 -0.810
H9 0.812 -1.270 -0.810

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46771.46771.10501.10502.03702.03702.03702.0370
N21.46772.53252.08562.08561.02661.02662.73582.7358
N31.46772.53252.08562.08562.73582.73581.02661.0266
H41.10502.08562.08561.77742.39312.93482.93482.3931
H51.10502.08562.08561.77742.93482.39312.39312.9348
H62.03701.02662.73582.39312.93481.62383.01412.5393
H72.03701.02662.73582.93482.39311.62382.53933.0141
H82.03702.73581.02662.93482.39313.01412.53931.6238
H92.03702.73581.02662.39312.93482.53933.01411.6238

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.197 C1 N2 H7 108.197
C1 N3 H8 108.197 C1 N3 H9 108.197
N2 C1 N3 119.254 N2 C1 H4 107.486
N2 C1 H5 107.486 N3 C1 H4 107.486
N3 C1 H5 107.486 H4 C1 H5 107.079
H6 N2 H7 104.532 H8 N3 H9 104.532
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability