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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-150.783097
Energy at 298.15K-150.791207
HF Energy-150.253843
Counterpoise corrected energy-150.783097
CP Energy at 298.15K-150.791207
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.254834
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/6-31G**
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 3569 3346 2.00      
2 A1 3143 2947 41.64      
3 A1 1721 1614 42.55      
4 A1 1553 1456 0.02      
5 A1 1152 1080 36.64      
6 A1 912 855 0.08      
7 A1 468 439 7.30      
8 A2 3665 3436 0.00      
9 A2 1441 1351 0.00      
10 A2 1102 1033 0.00      
11 A2 288 270 0.00      
12 B1 3663 3435 0.63      
13 B1 3197 2997 30.88      
14 B1 1418 1330 0.30      
15 B1 871 817 1.49      
16 B1 414 388 106.18      
17 B2 3569 3347 0.01      
18 B2 1713 1606 2.60      
19 B2 1440 1350 26.88      
20 B2 1139 1068 59.85      
21 B2 853 800 408.58      

Unscaled Zero Point Vibrational Energy (zpe) 18644.7 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 17481.2 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/6-31G**
ABC
1.17892 0.30422 0.27505

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.556
N2 0.000 1.259 -0.184
N3 0.000 -1.259 -0.184
H4 0.878 0.000 1.203
H5 -0.878 0.000 1.203
H6 0.812 1.302 -0.790
H7 -0.812 1.302 -0.790
H8 -0.812 -1.302 -0.790
H9 0.812 -1.302 -0.790

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46051.46051.09011.09012.04132.04132.04132.0413
N21.46052.51752.06862.06861.01421.01422.75352.7535
N31.46052.51752.06862.06862.75352.75351.01421.0142
H41.09012.06862.06861.75552.38142.91932.91932.3814
H51.09012.06862.06861.75552.91932.38142.38142.9193
H62.04131.01422.75352.38142.91931.62413.06822.6031
H72.04131.01422.75352.91932.38141.62412.60313.0682
H82.04132.75351.01422.91932.38143.06822.60311.6241
H92.04132.75351.01422.38142.91932.60313.06821.6241

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.842 C1 N2 H7 109.842
C1 N3 H8 109.842 C1 N3 H9 109.842
N2 C1 N3 119.054 N2 C1 H4 107.503
N2 C1 H5 107.503 N3 C1 H4 107.503
N3 C1 H5 107.503 H4 C1 H5 107.254
H6 N2 H7 106.393 H8 N3 H9 106.393
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability