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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP2=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/6-31+G**
 hartrees
Energy at 0K-150.779716
Energy at 298.15K-150.787755
HF Energy-150.261683
Counterpoise corrected energy-150.779716
CP Energy at 298.15K-150.787755
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.199916
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 MP2=FULL/6-31+G**
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 3579 3361 0.00      
2 A1 3157 2965 30.65      
3 A1 1704 1600 72.24      
4 A1 1538 1444 0.07      
5 A1 1116 1048 43.14      
6 A1 869 816 7.81      
7 A1 464 436 2.58      
8 A2 3694 3469 0.00      
9 A2 1427 1340 0.00      
10 A2 1087 1021 0.00      
11 A2 271 254 0.00      
12 B1 3691 3467 6.88      
13 B1 3223 3027 24.12      
14 B1 1397 1312 0.02      
15 B1 862 810 0.95      
16 B1 408 383 105.12      
17 B2 3580 3362 1.53      
18 B2 1694 1591 5.03      
19 B2 1426 1339 25.79      
20 B2 1118 1050 107.83      
21 B2 793 744 446.59      

Unscaled Zero Point Vibrational Energy (zpe) 18546.6 cm-1
Scaled (by 0.9392) Zero Point Vibrational Energy (zpe) 17419.0 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 MP2=FULL/6-31+G**
ABC
1.19392 0.30128 0.27389

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.550
N2 0.000 1.260 -0.185
N3 0.000 -1.260 -0.185
H4 0.878 0.000 1.192
H5 -0.878 0.000 1.192
H6 0.819 1.342 -0.775
H7 -0.819 1.342 -0.775
H8 -0.819 -1.342 -0.775
H9 0.819 -1.342 -0.775

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45811.45811.08811.08812.05592.05592.05592.0559
N21.45812.51922.06242.06241.01321.01322.79052.7905
N31.45812.51922.06242.06242.79052.79051.01321.0132
H41.08812.06242.06241.75682.38172.92432.92432.3817
H51.08812.06242.06241.75682.92432.38172.38172.9243
H62.05591.01322.79052.38172.92431.63893.14442.6836
H72.05591.01322.79052.92432.38171.63892.68363.1444
H82.05592.79051.01322.92432.38173.14442.68361.6389
H92.05592.79051.01322.38172.92432.68363.14441.6389

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.317 C1 N2 H7 111.317
C1 N3 H8 111.317 C1 N3 H9 111.317
N2 C1 N3 119.500 N2 C1 H4 107.295
N2 C1 H5 107.295 N3 C1 H4 107.295
N3 C1 H5 107.295 H4 C1 H5 107.666
H6 N2 H7 107.953 H8 N3 H9 107.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability