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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-151.224090
Energy at 298.15K-151.232075
HF Energy-151.224090
Nuclear repulsion energy82.898125
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 TPSSh/6-31G(2df,p)
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 3332 3.35      
2 A1 3052 2946 42.82      
3 A1 1674 1616 29.91      
4 A1 1498 1446 0.01      
5 A1 1114 1075 27.48      
6 A1 862 832 0.08      
7 A1 443 427 5.38      
8 A2 3535 3411 0.00      
9 A2 1403 1354 0.00      
10 A2 1069 1032 0.00      
11 A2 263 254 0.00      
12 B1 3534 3410 1.17      
13 B1 3098 2989 28.24      
14 B1 1376 1328 0.50      
15 B1 842 813 0.33      
16 B1 392 378 83.63      
17 B2 3453 3332 0.22      
18 B2 1664 1605 0.98      
19 B2 1389 1340 22.16      
20 B2 1065 1027 47.65      
21 B2 820 792 399.97      

Unscaled Zero Point Vibrational Energy (zpe) 17999.0 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 17369.0 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 TPSSh/6-31G(2df,p)
ABC
1.17758 0.30052 0.27211

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.541
N2 0.000 1.285 -0.179
N3 0.000 -1.285 -0.179
H4 0.884 0.000 1.184
H5 -0.884 0.000 1.184
H6 0.818 1.351 -0.775
H7 -0.818 1.351 -0.775
H8 -0.818 -1.351 -0.775
H9 0.818 -1.351 -0.775

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47351.47351.09261.09262.05592.05592.05592.0559
N21.47352.57072.07152.07151.01421.01422.82402.8240
N31.47352.57072.07152.07152.82402.82401.01421.0142
H41.09262.07152.07151.76752.38032.92552.92552.3803
H51.09262.07152.07151.76752.92552.38032.38032.9255
H62.05591.01422.82402.38032.92551.63663.15902.7020
H72.05591.01422.82402.92552.38031.63662.70203.1590
H82.05592.82401.01422.92552.38033.15902.70201.6366
H92.05592.82401.01422.38032.92552.70203.15901.6366

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.098 C1 N2 H7 110.098
C1 N3 H8 110.098 C1 N3 H9 110.098
N2 C1 N3 121.455 N2 C1 H4 106.711
N2 C1 H5 106.711 N3 C1 H4 106.711
N3 C1 H5 106.711 H4 C1 H5 107.960
H6 N2 H7 107.572 H8 N3 H9 107.572
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability