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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-150.707909
Energy at 298.15K-150.716030
HF Energy-150.235778
Counterpoise corrected energy-150.707909
CP Energy at 298.15K-150.716030
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.116843
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/6-31G*
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 3510 3307 0.56      
2 A1 3136 2955 35.23      
3 A1 1731 1631 51.45      
4 A1 1553 1463 0.20      
5 A1 1156 1089 37.72      
6 A1 910 858 0.10      
7 A1 468 441 7.11      
8 A2 3616 3407 0.00      
9 A2 1437 1354 0.00      
10 A2 1101 1037 0.00      
11 A2 298 281 0.00      
12 B1 3614 3405 0.11      
13 B1 3197 3012 25.58      
14 B1 1416 1335 0.34      
15 B1 873 823 0.60      
16 B1 427 402 115.03      
17 B2 3512 3309 0.04      
18 B2 1720 1621 1.60      
19 B2 1430 1347 21.31      
20 B2 1129 1064 60.86      
21 B2 851 802 464.19      

Unscaled Zero Point Vibrational Energy (zpe) 18541.8 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 17470.1 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 MP2=FULL/6-31G*
ABC
1.17912 0.30299 0.27441

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.554
N2 0.000 1.260 -0.183
N3 0.000 -1.260 -0.183
H4 0.880 0.000 1.202
H5 -0.880 0.000 1.202
H6 0.817 1.308 -0.791
H7 -0.817 1.308 -0.791
H8 -0.817 -1.308 -0.791
H9 0.817 -1.308 -0.791

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46031.46031.09281.09282.04602.04602.04602.0460
N21.46032.52092.06932.06931.01891.01892.76252.7625
N31.46032.52092.06932.06932.76252.76251.01891.0189
H41.09282.06932.06931.76072.38412.92572.92572.3841
H51.09282.06932.06931.76072.92572.38412.38412.9257
H62.04601.01892.76252.38412.92571.63333.08362.6155
H72.04601.01892.76252.92572.38411.63332.61553.0836
H82.04602.76251.01892.92572.38413.08362.61551.6333
H92.04602.76251.01892.38412.92572.61553.08361.6333

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.947 C1 N2 H7 109.947
C1 N3 H8 109.947 C1 N3 H9 109.947
N2 C1 N3 119.333 N2 C1 H4 107.410
N2 C1 H5 107.410 N3 C1 H4 107.410
N3 C1 H5 107.410 H4 C1 H5 107.336
H6 N2 H7 106.552 H8 N3 H9 106.552
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability