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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: QCISD/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 QCISD/cc-pVDZ
 hartrees
Energy at 0K-150.788381
Energy at 298.15K-150.796494
HF Energy-150.256055
Counterpoise corrected energy-150.788381
CP Energy at 298.15K-150.796494
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy82.850781
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 QCISD/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 3479 3338 4.48      
2 A1 3077 2953 46.18      
3 A1 1674 1606 30.59      
4 A1 1495 1435 0.02      
5 A1 1149 1103 25.98      
6 A1 919 882 0.87      
7 A1 458 440 8.13      
8 A2 3563 3419 0.00      
9 A2 1413 1356 0.00      
10 A2 1094 1049 0.00      
11 A2 285 273 0.00      
12 B1 3562 3417 1.78      
13 B1 3129 3002 33.06      
14 B1 1394 1338 1.35      
15 B1 864 829 1.74      
16 B1 416 399 90.03      
17 B2 3479 3338 0.01      
18 B2 1668 1600 1.08      
19 B2 1403 1346 33.62      
20 B2 1128 1083 59.45      
21 B2 882 847 345.17      

Unscaled Zero Point Vibrational Energy (zpe) 18265.8 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 17524.2 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 QCISD/cc-pVDZ
ABC
1.15828 0.30361 0.27377

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.560
N2 0.000 1.264 -0.183
N3 0.000 -1.264 -0.183
H4 0.888 0.000 1.217
H5 -0.888 0.000 1.217
H6 0.812 1.275 -0.808
H7 -0.812 1.275 -0.808
H8 -0.812 -1.275 -0.808
H9 0.812 -1.275 -0.808

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.46571.46571.10501.10502.03892.03892.03892.0389
N21.46572.52732.08462.08461.02551.02552.73782.7378
N31.46572.52732.08462.08462.73782.73781.02551.0255
H41.10502.08462.08461.77642.39462.93612.93612.3946
H51.10502.08462.08461.77642.93612.39462.39462.9361
H62.03891.02552.73782.39462.93611.62493.02352.5498
H72.03891.02552.73782.93612.39461.62492.54983.0235
H82.03892.73781.02552.93612.39463.02352.54981.6249
H92.03892.73781.02552.39462.93612.54983.02351.6249

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 108.574 C1 N2 H7 108.574
C1 N3 H8 108.574 C1 N3 H9 108.574
N2 C1 N3 119.121 N2 C1 H4 107.542
N2 C1 H5 107.542 N3 C1 H4 107.542
N3 C1 H5 107.542 H4 C1 H5 106.984
H6 N2 H7 104.797 H8 N3 H9 104.797
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability