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All results from a given calculation for NH2CH2NH2 (diaminomethane)

using model chemistry: LSDA/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at LSDA/cc-pVTZ
 hartrees
Energy at 0K-150.485069
Energy at 298.15K-150.492953
HF Energy-150.485069
Nuclear repulsion energy83.566602
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 LSDA/cc-pVTZ
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 3412 3375 0.50      
2 A1 2968 2936 30.73      
3 A1 1587 1569 45.12      
4 A1 1404 1389 0.81      
5 A1 1086 1075 28.46      
6 A1 814 805 6.31      
7 A1 445 440 2.09      
8 A2 3505 3467 0.00      
9 A2 1333 1319 0.00      
10 A2 1031 1019 0.00      
11 A2 240 238 0.00      
12 B1 3501 3463 3.20      
13 B1 3011 2978 16.39      
14 B1 1313 1299 0.66      
15 B1 813 804 0.02      
16 B1 395 390 79.77      
17 B2 3415 3378 1.16      
18 B2 1575 1558 6.60      
19 B2 1317 1303 12.53      
20 B2 1101 1089 87.12      
21 B2 706 699 444.09      

Unscaled Zero Point Vibrational Energy (zpe) 17485.9 cm-1
Scaled (by 0.9891) Zero Point Vibrational Energy (zpe) 17295.3 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 LSDA/cc-pVTZ
ABC
1.19424 0.30734 0.27923

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.542
N2 0.000 1.246 -0.181
N3 0.000 -1.246 -0.181
H4 0.880 0.000 1.205
H5 -0.880 0.000 1.205
H6 0.824 1.325 -0.781
H7 -0.824 1.325 -0.781
H8 -0.824 -1.325 -0.781
H9 0.824 -1.325 -0.781

Atom - Atom Distances (Å)
  C1 N2 N3 H4 H5 H6 H7 H8 H9
C11.44061.44061.10191.10192.04542.04542.04542.0454
N21.44062.49202.06112.06111.02211.02212.76522.7652
N31.44062.49202.06112.06112.76522.76521.02211.0221
H41.10192.06112.06111.76052.38782.93292.93292.3878
H51.10192.06112.06111.76052.93292.38782.38782.9329
H62.04541.02212.76522.38782.93291.64753.11962.6491
H72.04541.02212.76522.93292.38781.64752.64913.1196
H82.04542.76521.02212.93292.38783.11962.64911.6475
H92.04542.76521.02212.38782.93292.64913.11961.6475

picture of diaminomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N2 H6 111.169 C1 N2 H7 111.169
C1 N3 H8 111.169 C1 N3 H9 111.169
N2 C1 N3 119.740 N2 C1 H4 107.575
N2 C1 H5 107.575 N3 C1 H4 107.575
N3 C1 H5 107.575 H4 C1 H5 106.041
H6 N2 H7 107.405 H8 N3 H9 107.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127      
2 N -0.307      
3 N -0.307      
4 H 0.114      
5 H 0.114      
6 H 0.128      
7 H 0.128      
8 H 0.128      
9 H 0.128      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.824 1.824
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.037 0.000 0.000
y 0.000 -25.682 0.000
z 0.000 0.000 -18.646
Traceless
 xyz
x 5.127 0.000 0.000
y 0.000 -7.840 0.000
z 0.000 0.000 2.713
Polar
3z2-r25.426
x2-y28.645
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.633 0.000 0.000
y 0.000 5.204 0.000
z 0.000 0.000 4.739


<r2> (average value of r2) Å2
<r2> 53.358
(<r2>)1/2 7.305