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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/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 CCD/6-311G*
 hartrees
Energy at 0K-150.787960
Energy at 298.15K-150.796072
HF Energy-150.272357
Counterpoise corrected energy-150.787960
CP Energy at 298.15K-150.796072
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.132402
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 CCD/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 3527 3369 4.13      
2 A1 3084 2946 39.64      
3 A1 1755 1676 67.18      
4 A1 1520 1452 0.65      
5 A1 1158 1106 39.15      
6 A1 925 883 0.19      
7 A1 468 447 5.92      
8 A2 3616 3453 0.00      
9 A2 1433 1369 0.00      
10 A2 1109 1059 0.00      
11 A2 278 266 0.00      
12 B1 3614 3452 1.06      
13 B1 3134 2993 29.71      
14 B1 1422 1359 0.63      
15 B1 865 826 1.22      
16 B1 416 397 108.17      
17 B2 3527 3369 0.00      
18 B2 1744 1665 2.04      
19 B2 1425 1361 24.74      
20 B2 1133 1082 68.20      
21 B2 871 832 451.85      

Unscaled Zero Point Vibrational Energy (zpe) 18511.1 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 17680.0 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 CCD/6-311G*
ABC
1.17949 0.30265 0.27416

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.554
N2 0.000 1.260 -0.185
N3 0.000 -1.260 -0.185
H4 0.881 0.000 1.205
H5 -0.881 0.000 1.205
H6 0.817 1.313 -0.784
H7 -0.817 1.313 -0.784
H8 -0.817 -1.313 -0.784
H9 0.817 -1.313 -0.784

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46131.46131.09491.09492.04542.04542.04542.0454
N21.46132.52092.07282.07281.01421.01422.76602.7660
N31.46132.52092.07282.07282.76602.76601.01421.0142
H41.09492.07282.07281.76142.38442.92612.92612.3844
H51.09492.07282.07281.76142.92612.38442.38442.9261
H62.04541.01422.76602.38442.92611.63343.09332.6268
H72.04541.01422.76602.92612.38441.63342.62683.0933
H82.04542.76601.01422.92612.38443.09332.62681.6334
H92.04542.76601.01422.38442.92612.62683.09331.6334

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.116 C1 N2 H7 110.116
C1 N3 H8 110.116 C1 N3 H9 110.116
N2 C1 N3 119.203 N2 C1 H4 107.496
N2 C1 H5 107.496 N3 C1 H4 107.496
N3 C1 H5 107.496 H4 C1 H5 107.099
H6 N2 H7 107.269 H8 N3 H9 107.269
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability