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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-150.514212
Energy at 298.15K-150.522148
HF Energy-150.172358
Counterpoise corrected energy-150.514212
CP Energy at 298.15K-150.522148
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.039473
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 3514 3371 1.96      
2 A1 3054 2931 42.38      
3 A1 1751 1680 50.71      
4 A1 1532 1470 0.66      
5 A1 1089 1045 80.99      
6 A1 775 743 46.36      
7 A1 460 442 0.65      
8 A2 3628 3481 0.00      
9 A2 1416 1358 0.00      
10 A2 1082 1038 0.00      
11 A2 275 264 0.00      
12 B1 3628 3481 0.12      
13 B1 3105 2979 31.66      
14 B1 1394 1337 0.24      
15 B1 842 808 0.00      
16 B1 416 399 114.76      
17 B2 3515 3373 0.00      
18 B2 1741 1670 5.09      
19 B2 1425 1368 8.73      
20 B2 1091 1047 64.30      
21 B2 639 613 601.23      

Unscaled Zero Point Vibrational Energy (zpe) 18184.9 cm-1
Scaled (by 0.9595) Zero Point Vibrational Energy (zpe) 17448.4 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
1.17480 0.29004 0.26506

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 0.553
N2 0.000 1.273 -0.196
N3 0.000 -1.273 -0.196
H4 0.887 0.000 1.204
H5 -0.887 0.000 1.204
H6 0.841 1.436 -0.746
H7 -0.841 1.436 -0.746
H8 -0.841 -1.436 -0.746
H9 0.841 -1.436 -0.746

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.47721.47721.10011.10012.11132.11132.11132.1113
N21.47722.54572.09002.09001.01791.01792.88902.8890
N31.47722.54572.09002.09002.88902.88901.01791.0179
H41.10012.09002.09001.77372.42242.97502.97502.4224
H51.10012.09002.09001.77372.97502.42242.42242.9750
H62.11131.01792.88902.42242.97501.68193.32792.8717
H72.11131.01792.88902.97502.42241.68192.87173.3279
H82.11132.88901.01792.97502.42243.32792.87171.6819
H92.11132.88901.01792.42242.97502.87173.32791.6819

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 114.336 C1 N2 H7 114.336
C1 N3 H8 114.336 C1 N3 H9 114.336
N2 C1 N3 119.013 N2 C1 H4 107.473
N2 C1 H5 107.473 N3 C1 H4 107.473
N3 C1 H5 107.473 H4 C1 H5 107.444
H6 N2 H7 111.410 H8 N3 H9 111.410
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability