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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: MP2=FULL/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-150.802601
Energy at 298.15K-150.810574
HF Energy-150.272242
Counterpoise corrected energy-150.802601
CP Energy at 298.15K-150.810574
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.799090
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/aug-cc-pVDZ
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 3502 3394 0.48      
2 A1 3102 3007 30.02      
3 A1 1648 1597 41.97      
4 A1 1486 1440 0.24      
5 A1 1100 1066 33.64      
6 A1 846 820 2.72      
7 A1 451 437 2.40      
8 A2 3608 3497 0.00      
9 A2 1397 1354 0.00      
10 A2 1067 1034 0.00      
11 A2 256 248 0.00      
12 B1 3605 3494 4.74      
13 B1 3161 3063 21.65      
14 B1 1361 1319 0.60      
15 B1 851 825 0.59      
16 B1 383 371 83.11      
17 B2 3503 3395 4.02      
18 B2 1640 1589 7.00      
19 B2 1383 1340 18.56      
20 B2 1103 1069 88.47      
21 B2 780 756 360.93      

Unscaled Zero Point Vibrational Energy (zpe) 18115.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 17557.5 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/aug-cc-pVDZ
ABC
1.17424 0.29997 0.27194

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.554
N2 0.000 1.265 -0.184
N3 0.000 -1.265 -0.184
H4 0.886 0.000 1.206
H5 -0.886 0.000 1.206
H6 0.819 1.326 -0.790
H7 -0.819 1.326 -0.790
H8 -0.819 -1.326 -0.790
H9 0.819 -1.326 -0.790

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46491.46491.09961.09962.05822.05822.05822.0582
N21.46492.53032.07792.07791.02021.02022.78422.7842
N31.46492.53032.07792.07792.78422.78421.02021.0202
H41.09962.07792.07791.77142.39742.94062.94062.3974
H51.09962.07792.07791.77142.94062.39742.39742.9406
H62.05821.02022.78422.39742.94061.63703.11692.6524
H72.05821.02022.78422.94062.39741.63702.65243.1169
H82.05822.78421.02022.94062.39743.11692.65241.6370
H92.05822.78421.02022.39742.94062.65243.11691.6370

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 110.553 C1 N2 H7 110.553
C1 N3 H8 110.553 C1 N3 H9 110.553
N2 C1 N3 119.449 N2 C1 H4 107.384
N2 C1 H5 107.384 N3 C1 H4 107.384
N3 C1 H5 107.384 H4 C1 H5 107.315
H6 N2 H7 106.704 H8 N3 H9 106.704
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability