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All results from a given calculation for C3H10N2 (1,2-Diaminopropane)

using model chemistry: PBEPBE/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at PBEPBE/3-21G
 hartrees
Energy at 0K-228.256938
Energy at 298.15K-228.269153
Nuclear repulsion energy193.370803
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 PBEPBE/3-21G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3423 3392 0.90      
2 A 3372 3341 2.06      
3 A 3308 3278 3.78      
4 A 3271 3241 15.39      
5 A 3067 3039 24.93      
6 A 3044 3017 25.83      
7 A 3038 3010 20.64      
8 A 2977 2950 33.30      
9 A 2972 2945 26.58      
10 A 2820 2794 93.67      
11 A 1660 1645 3.64      
12 A 1647 1632 45.15      
13 A 1521 1507 5.68      
14 A 1503 1490 6.22      
15 A 1468 1454 2.66      
16 A 1398 1386 16.10      
17 A 1378 1365 3.50      
18 A 1373 1360 2.29      
19 A 1343 1330 10.33      
20 A 1321 1309 8.78      
21 A 1255 1244 2.21      
22 A 1188 1177 2.34      
23 A 1135 1125 0.11      
24 A 1072 1062 8.44      
25 A 1036 1027 3.08      
26 A 1005 996 1.23      
27 A 930 922 7.49      
28 A 865 857 3.35      
29 A 827 819 34.75      
30 A 711 705 120.31      
31 A 631 625 234.61      
32 A 484 479 12.98      
33 A 450 446 34.97      
34 A 392 388 71.31      
35 A 352 348 1.52      
36 A 250 247 6.36      
37 A 227 225 5.37      
38 A 197 195 95.38      
39 A 104 103 18.24      

Unscaled Zero Point Vibrational Energy (zpe) 29506.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 29237.7 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 PBEPBE/3-21G
ABC
0.26328 0.11533 0.08834

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.430 1.392 -0.210
H2 -0.428 1.870 0.126
H3 1.251 1.952 0.083
N4 -2.052 -0.146 0.013
H5 -2.157 0.715 -0.546
H6 -2.245 0.044 1.011
C7 -0.721 -0.764 -0.196
H8 -0.725 -1.779 0.245
H9 -0.566 -0.853 -1.285
C10 1.804 -0.639 -0.055
H11 1.835 -1.694 0.271
H12 1.877 -0.591 -1.156
H13 2.677 -0.116 0.377
C14 0.487 0.025 0.377
H15 0.416 0.000 1.494

Atom - Atom Distances (Å)
  N1 H2 H3 N4 H5 H6 C7 H8 H9 C10 H11 H12 H13 C14 H15
N11.03721.03632.92842.69543.23432.44423.40562.68102.45763.42482.63072.76961.48872.2003
H21.03721.68102.59172.18602.72402.66973.66323.06983.36314.22383.60653.69422.07442.4658
H31.03631.68103.91393.68024.08933.36844.22573.61142.65363.69752.89732.52982.09372.5493
N42.92842.59173.91391.03231.03381.48192.11642.09623.88844.19164.12294.74322.57092.8821
H52.69542.18603.68021.03231.69792.09102.98252.35294.21554.73374.28364.99162.88493.3611
H63.23432.72404.08931.03381.69792.10472.49382.98264.24264.49564.69924.96502.80472.7047
C72.44422.66973.36841.48192.09102.10471.10651.10442.53262.75982.77503.50661.55282.1756
H83.40563.66324.22572.11642.98252.49381.10651.79582.79112.56203.18503.78962.17812.4559
H92.68103.06983.61142.09622.35292.98261.10441.79582.67902.98242.46003.71812.15493.0689
C102.45763.36312.65363.88844.21554.24262.53262.79112.67901.10451.10371.10561.53722.1766
H113.42484.22383.69754.19164.73374.49562.75982.56202.98241.10451.80401.79142.18682.5255
H122.63073.60652.89734.12294.28364.69922.77503.18502.46001.10371.80401.79342.15843.0829
H132.76963.69422.52984.74324.99164.96503.50663.78963.71811.10561.79141.79342.19432.5244
C141.48872.07442.09372.57092.88492.80471.55282.17812.15491.53722.18682.15842.19431.1198
H152.20032.46582.54932.88213.36112.70472.17562.45593.06892.17662.52553.08292.52441.1198

picture of 1,2-Diaminopropane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C14 C7 106.933 N1 C14 C10 108.609
N1 C14 H15 114.281 H2 N1 H3 108.326
H2 N1 C14 109.116 H3 N1 C14 110.754
N4 C7 H8 108.836 N4 C7 H9 107.388
N4 C7 C14 115.791 H5 N4 H6 110.527
H5 N4 C7 111.282 H6 N4 C7 112.340
C7 C14 C10 110.090 C7 C14 H15 107.884
H8 C7 H9 108.628 H8 C7 C14 108.824
H9 C7 C14 107.169 C10 C14 H15 108.995
H11 C10 H12 109.567 H11 C10 H13 108.303
H11 C10 C14 110.677 H12 C10 H13 108.537
H12 C10 C14 108.514 H13 C10 C14 111.208
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.630      
2 H 0.243      
3 H 0.264      
4 N -0.644      
5 H 0.271      
6 H 0.261      
7 C -0.231      
8 H 0.199      
9 H 0.220      
10 C -0.575      
11 H 0.198      
12 H 0.216      
13 H 0.193      
14 C -0.146      
15 H 0.161      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.766 1.346 1.703 2.302
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.998 -2.972 -1.000
y -2.972 -30.694 1.610
z -1.000 1.610 -33.178
Traceless
 xyz
x -3.062 -2.972 -1.000
y -2.972 3.394 1.610
z -1.000 1.610 -0.332
Polar
3z2-r2-0.664
x2-y2-4.304
xy-2.972
xz-1.000
yz1.610


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.515 -0.264 -0.125
y -0.264 6.882 -0.187
z -0.125 -0.187 5.833


<r2> (average value of r2) Å2
<r2> 144.818
(<r2>)1/2 12.034