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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B97D3/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
Energy calculated at B97D3/cc-pVTZ
 hartrees
Energy at 0K-187.993574
Energy at 298.15K-187.997399
HF Energy-187.993574
Nuclear repulsion energy101.908442
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 B97D3/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 A 3524 3475 11.30      
2 A 3446 3398 0.75      
3 A 2309 2276 0.29      
4 A 1623 1601 7.11      
5 A 1178 1162 0.00      
6 A 813 801 2.83      
7 A 529 522 118.39      
8 A 424 418 14.02      
9 A 387 381 7.90      
10 A 161 159 22.03      
11 B 3523 3474 10.67      
12 B 3450 3402 2.42      
13 B 1623 1600 14.06      
14 B 1355 1336 108.29      
15 B 1178 1162 0.01      
16 B 591 583 292.97      
17 B 387 382 13.92      
18 B 163 160 23.94      

Unscaled Zero Point Vibrational Energy (zpe) 13332.0 cm-1
Scaled (by 0.986) Zero Point Vibrational Energy (zpe) 13145.4 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 B97D3/cc-pVTZ
ABC
5.21080 0.11942 0.11941

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 0.606 0.057
C2 -0.003 -0.606 0.057
N3 -0.003 1.955 -0.085
N4 0.003 -1.955 -0.085
H5 -0.341 2.474 0.715
H6 0.848 2.356 -0.460
H7 0.341 -2.474 0.715
H8 -0.848 -2.356 -0.460

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21281.35602.56532.00972.01023.16803.1247
C21.21282.56531.35603.16803.12472.00972.0102
N31.35602.56533.90991.01191.01214.51374.4085
N42.56531.35603.90994.51374.40851.01191.0121
H52.00973.16801.01194.51371.67534.99474.9963
H62.01023.12471.01214.40851.67534.99635.0071
H73.16802.00974.51371.01194.99474.99631.6753
H83.12472.01024.40851.01214.99635.00711.6753

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 173.969 C1 N3 H5 115.384
C1 N3 H6 115.407 C2 C1 N3 173.969
C2 N4 H7 115.384 C2 N4 H8 115.407
H5 N3 H6 111.731 H7 N4 H8 111.731
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.117      
2 C -0.117      
3 N -0.186      
4 N -0.186      
5 H 0.151      
6 H 0.152      
7 H 0.151      
8 H 0.152      


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 1.268 1.268
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.642 3.714 0.000
y 3.714 -13.600 0.000
z 0.000 0.000 -23.781
Traceless
 xyz
x -4.952 3.714 0.000
y 3.714 10.112 0.000
z 0.000 0.000 -5.160
Polar
3z2-r2-10.320
x2-y2-10.042
xy3.714
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.906 0.251 0.000
y 0.251 10.265 0.000
z 0.000 0.000 3.894


<r2> (average value of r2) Å2
<r2> 97.224
(<r2>)1/2 9.860