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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: CCD/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-150.864939
Energy at 298.15K-150.873009
HF Energy-150.262984
Counterpoise corrected energy-150.864939
CP Energy at 298.15K-150.873009
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy83.307985
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(2df,p)
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 3554 3366 0.01      
2 A1 3120 2955 32.91      
3 A1 1706 1616 41.76      
4 A1 1533 1452 0.04      
5 A1 1149 1088 32.43      
6 A1 905 857 0.00      
7 A1 465 440 5.60      
8 A2 3642 3450 0.00      
9 A2 1431 1356 0.00      
10 A2 1095 1038 0.00      
11 A2 272 258 0.00      
12 B1 3641 3448 0.78      
13 B1 3170 3003 21.12      
14 B1 1406 1332 0.29      
15 B1 869 823 0.66      
16 B1 394 373 91.93      
17 B2 3554 3366 0.15      
18 B2 1697 1607 2.98      
19 B2 1423 1348 21.62      
20 B2 1132 1072 55.00      
21 B2 858 813 379.88      

Unscaled Zero Point Vibrational Energy (zpe) 18507.2 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 17530.1 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/6-31G(2df,p)
ABC
1.17553 0.30541 0.27572

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.558
N2 0.000 1.257 -0.185
N3 0.000 -1.257 -0.185
H4 0.878 0.000 1.206
H5 -0.878 0.000 1.206
H6 0.810 1.293 -0.794
H7 -0.810 1.293 -0.794
H8 -0.810 -1.293 -0.794
H9 0.810 -1.293 -0.794

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.45971.45971.09211.09212.03802.03802.03802.0380
N21.45972.51422.07032.07031.01381.01382.74412.7441
N31.45972.51422.07032.07032.74412.74411.01381.0138
H41.09212.07032.07031.75702.38262.91912.91912.3826
H51.09212.07032.07031.75702.91912.38262.38262.9191
H62.03801.01382.74412.38262.91911.61913.05142.5864
H72.03801.01382.74412.91912.38261.61912.58643.0514
H82.03802.74411.01382.91912.38263.05142.58641.6191
H92.03802.74411.01382.38262.91912.58643.05141.6191

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 109.639 C1 N2 H7 109.639
C1 N3 H8 109.639 C1 N3 H9 109.639
N2 C1 N3 118.895 N2 C1 H4 107.576
N2 C1 H5 107.576 N3 C1 H4 107.576
N3 C1 H5 107.576 H4 C1 H5 107.109
H6 N2 H7 105.989 H8 N3 H9 105.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability