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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP2=FULL/6-311G**

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/6-311G**
 hartrees
Energy at 0K-150.869354
Energy at 298.15K-150.877455
HF Energy-150.288108
Counterpoise corrected energy-150.869354
CP Energy at 298.15K-150.877455
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.282304
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/6-311G**
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 3538 3356 0.82      
2 A1 3113 2953 38.43      
3 A1 1665 1579 46.62      
4 A1 1511 1433 0.16      
5 A1 1142 1083 34.60      
6 A1 903 857 0.23      
7 A1 459 436 6.19      
8 A2 3636 3449 0.00      
9 A2 1424 1351 0.00      
10 A2 1092 1036 0.00      
11 A2 280 266 0.00      
12 B1 3633 3446 0.20      
13 B1 3169 3006 27.23      
14 B1 1393 1321 1.05      
15 B1 870 825 1.62      
16 B1 422 400 96.50      
17 B2 3538 3356 0.65      
18 B2 1660 1575 2.75      
19 B2 1417 1344 23.40      
20 B2 1123 1065 69.14      
21 B2 839 796 417.15      

Unscaled Zero Point Vibrational Energy (zpe) 18412.9 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 17466.5 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/6-311G**
ABC
1.17811 0.30482 0.27562

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.556
N2 0.000 1.258 -0.184
N3 0.000 -1.258 -0.184
H4 0.880 0.000 1.204
H5 -0.880 0.000 1.204
H6 0.813 1.296 -0.791
H7 -0.813 1.296 -0.791
H8 -0.813 -1.296 -0.791
H9 0.813 -1.296 -0.791

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45921.45921.09281.09282.03822.03822.03822.0382
N21.45922.51552.06932.06931.01501.01502.74812.7481
N31.45922.51552.06932.06932.74812.74811.01501.0150
H41.09282.06932.06931.76012.37962.91962.91962.3796
H51.09282.06932.06931.76012.91962.37962.37962.9196
H62.03821.01502.74812.37962.91961.62563.06022.5927
H72.03821.01502.74812.91962.37961.62562.59273.0602
H82.03822.74811.01502.91962.37963.06022.59271.6256
H92.03822.74811.01502.37962.91962.59273.06021.6256

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.625 C1 N2 H7 109.625
C1 N3 H8 109.625 C1 N3 H9 109.625
N2 C1 N3 119.066 N2 C1 H4 107.492
N2 C1 H5 107.492 N3 C1 H4 107.492
N3 C1 H5 107.492 H4 C1 H5 107.291
H6 N2 H7 106.415 H8 N3 H9 106.415
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability