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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-150.943181
Energy at 298.15K-150.951224
HF Energy-150.305653
Counterpoise corrected energy-150.943181
CP Energy at 298.15K-150.951224
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.423348
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/cc-pVTZ
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 3535 3301 0.41      
2 A1 3093 2888 35.09      
3 A1 1690 1578 41.57      
4 A1 1520 1419 0.03      
5 A1 1130 1056 35.76      
6 A1 889 830 0.42      
7 A1 463 433 4.42      
8 A2 3622 3382 0.00      
9 A2 1424 1329 0.00      
10 A2 1091 1019 0.00      
11 A2 263 245 0.00      
12 B1 3621 3380 0.84      
13 B1 3138 2930 24.40      
14 B1 1396 1304 0.40      
15 B1 864 806 0.90      
16 B1 385 360 86.16      
17 B2 3535 3301 1.84      
18 B2 1680 1569 4.56      
19 B2 1415 1321 21.37      
20 B2 1124 1050 68.63      
21 B2 833 778 378.62      

Unscaled Zero Point Vibrational Energy (zpe) 18355.0 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 17138.1 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/cc-pVTZ
ABC
1.18170 0.30568 0.27620

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.556
N2 0.000 1.255 -0.185
N3 0.000 -1.255 -0.185
H4 0.875 0.000 1.203
H5 -0.875 0.000 1.203
H6 0.810 1.302 -0.788
H7 -0.810 1.302 -0.788
H8 -0.810 -1.302 -0.788
H9 0.810 -1.302 -0.788

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45731.45731.08901.08902.03942.03942.03942.0394
N21.45732.51022.06622.06621.01131.01132.74992.7499
N31.45732.51022.06622.06622.74992.74991.01131.0113
H41.08902.06622.06621.75092.38082.91632.91632.3808
H51.08902.06622.06621.75092.91632.38082.38082.9163
H62.03941.01132.74992.38082.91631.62003.06762.6050
H72.03941.01132.74992.91632.38081.62002.60503.0676
H82.03942.74991.01132.91632.38083.06762.60501.6200
H92.03942.74991.01132.38082.91632.60503.06761.6200

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.099 C1 N2 H7 110.099
C1 N3 H8 110.099 C1 N3 H9 110.099
N2 C1 N3 118.916 N2 C1 H4 107.593
N2 C1 H5 107.593 N3 C1 H4 107.593
N3 C1 H5 107.593 H4 C1 H5 107.007
H6 N2 H7 106.452 H8 N3 H9 106.452
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability