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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B3LYPultrafine/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B3LYPultrafine/6-311G*
 hartrees
Energy at 0K-188.084201
Energy at 298.15K-188.088233
HF Energy-188.084201
Nuclear repulsion energy102.082375
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 B3LYPultrafine/6-311G*
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 3602 3481 8.54      
2 A 3524 3406 1.64      
3 A 2360 2280 0.37      
4 A 1701 1643 10.41      
5 A 1218 1177 0.31      
6 A 828 800 2.42      
7 A 530 512 171.93      
8 A 441 426 7.45      
9 A 432 417 19.36      
10 A 197 190 24.71      
11 B 3602 3480 8.03      
12 B 3528 3409 2.90      
13 B 1702 1645 27.67      
14 B 1380 1334 106.24      
15 B 1218 1177 0.38      
16 B 589 569 362.94      
17 B 434 419 21.27      
18 B 197 190 26.59      

Unscaled Zero Point Vibrational Energy (zpe) 13741.3 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 13278.2 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 B3LYPultrafine/6-311G*
ABC
5.26520 0.11980 0.11978

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.002 0.604 0.054
C2 -0.002 -0.604 0.054
N3 -0.002 1.953 -0.082
N4 0.002 -1.953 -0.082
H5 -0.346 2.474 0.714
H6 0.843 2.358 -0.463
H7 0.346 -2.474 0.714
H8 -0.843 -2.358 -0.463

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.20731.35632.56032.01322.01303.16583.1231
C21.20732.56031.35633.16583.12312.01322.0130
N31.35632.56033.90611.01121.01144.51124.4088
N42.56031.35633.90614.51124.40881.01121.0114
H52.01323.16581.01124.51121.67634.99544.9978
H62.01303.12311.01144.40881.67634.99785.0084
H73.16582.01324.51121.01124.99544.99781.6763
H83.12312.01304.40881.01144.99785.00841.6763

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.204 C1 N3 H5 115.726
C1 N3 H6 115.693 C2 C1 N3 174.204
C2 N4 H7 115.726 C2 N4 H8 115.693
H5 N3 H6 111.946 H7 N4 H8 111.946
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.217      
2 C 0.217      
3 N -0.876      
4 N -0.876      
5 H 0.329      
6 H 0.330      
7 H 0.329      
8 H 0.330      


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 1.463 1.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.670 4.085 0.000
y 4.085 -13.234 0.000
z 0.000 0.000 -23.794
Traceless
 xyz
x -5.156 4.085 0.000
y 4.085 10.498 0.000
z 0.000 0.000 -5.342
Polar
3z2-r2-10.684
x2-y2-10.436
xy4.085
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.057 0.227 0.000
y 0.227 9.274 0.000
z 0.000 0.000 3.048


<r2> (average value of r2) Å2
<r2> 96.931
(<r2>)1/2 9.845