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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CID/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 CID/6-31G
 hartrees
Energy at 0K-150.480068
Energy at 298.15K-150.488009
HF Energy-150.174126
Nuclear repulsion energy82.478039
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 CID/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 3607 3373 0.33      
2 A1 3123 2921 45.43      
3 A1 1780 1665 54.00      
4 A1 1564 1462 0.80      
5 A1 1104 1033 86.81      
6 A1 776 726 70.24      
7 A1 469 438 0.00      
8 A2 3720 3479 0.00      
9 A2 1445 1351 0.00      
10 A2 1096 1025 0.00      
11 A2 269 252 0.00      
12 B1 3720 3479 0.49      
13 B1 3173 2967 34.06      
14 B1 1415 1324 0.69      
15 B1 859 803 0.11      
16 B1 415 388 111.18      
17 B2 3605 3371 0.04      
18 B2 1770 1655 8.44      
19 B2 1457 1362 9.70      
20 B2 1117 1045 85.83      
21 B2 618 578 611.65      

Unscaled Zero Point Vibrational Energy (zpe) 18549.2 cm-1
Scaled (by 0.9352) Zero Point Vibrational Energy (zpe) 17347.2 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 CID/6-31G
ABC
1.18897 0.29284 0.26780

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.550
N2 0.000 1.264 -0.197
N3 0.000 -1.264 -0.197
H4 0.881 0.000 1.198
H5 -0.881 0.000 1.198
H6 0.838 1.444 -0.733
H7 -0.838 1.444 -0.733
H8 -0.838 -1.444 -0.733
H9 0.838 -1.444 -0.733

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46871.46871.09391.09392.10612.10612.10612.1061
N21.46872.52842.07912.07911.01111.01112.88532.8853
N31.46872.52842.07912.07912.88532.88531.01111.0111
H41.09392.07912.07911.76262.41222.96202.96202.4122
H51.09392.07912.07911.76262.96202.41222.41222.9620
H62.10611.01112.88532.41222.96201.67663.33952.8882
H72.10611.01112.88532.96202.41221.67662.88823.3395
H82.10612.88531.01112.96202.41223.33952.88821.6766
H92.10612.88531.01112.41222.96202.88823.33951.6766

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 115.020 C1 N2 H7 115.020
C1 N3 H8 115.020 C1 N3 H9 115.020
N2 C1 N3 118.806 N2 C1 H4 107.551
N2 C1 H5 107.551 N3 C1 H4 107.551
N3 C1 H5 107.551 H4 C1 H5 107.339
H6 N2 H7 112.006 H8 N3 H9 112.006
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability