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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B97D3/TZVP

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/TZVP
 hartrees
Energy at 0K-187.990645
Energy at 298.15K-187.994328
HF Energy-187.990645
Nuclear repulsion energy101.914981
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/TZVP
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 3541 3490 14.61      
2 A 3460 3410 1.27      
3 A 2309 2276 0.66      
4 A 1628 1605 7.91      
5 A 1169 1152 0.50      
6 A 817 805 1.56      
7 A 460 454 171.24      
8 A 446 440 3.82      
9 A 385 380 11.50      
10 A 146 144 26.41      
11 B 3540 3489 13.74      
12 B 3465 3415 2.03      
13 B 1630 1607 20.98      
14 B 1366 1347 120.63      
15 B 1168 1151 0.54      
16 B 518 510 307.15      
17 B 385 380 16.30      
18 B 147 145 27.89      

Unscaled Zero Point Vibrational Energy (zpe) 13290.2 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 13098.9 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/TZVP
ABC
5.28941 0.11936 0.11935

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.004 0.607 0.049
C2 -0.004 -0.607 0.049
N3 -0.004 1.958 -0.078
N4 0.004 -1.958 -0.078
H5 -0.351 2.475 0.720
H6 0.838 2.369 -0.464
H7 0.351 -2.475 0.720
H8 -0.838 -2.369 -0.464

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.21421.35662.56802.01652.01643.17363.1355
C21.21422.56801.35663.17363.13552.01652.0164
N31.35662.56803.91551.01311.01334.51814.4238
N42.56801.35663.91554.51814.42381.01311.0133
H52.01653.17361.01314.51811.68184.99975.0110
H62.01643.13551.01334.42381.68185.01105.0268
H73.17362.01654.51811.01314.99975.01101.6818
H83.13552.01644.42381.01335.01105.02681.6818

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.588 C1 N3 H5 115.869
C1 N3 H6 115.843 C2 C1 N3 174.588
C2 N4 H7 115.869 C2 N4 H8 115.843
H5 N3 H6 112.181 H7 N4 H8 112.181
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.146      
2 C -0.146      
3 N -0.319      
4 N -0.319      
5 H 0.232      
6 H 0.233      
7 H 0.232      
8 H 0.233      


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 1.270 1.270
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.922 3.666 0.000
y 3.666 -13.188 0.000
z 0.000 0.000 -24.035
Traceless
 xyz
x -5.311 3.666 0.000
y 3.666 10.790 0.000
z 0.000 0.000 -5.479
Polar
3z2-r2-10.959
x2-y2-10.734
xy3.666
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.606 0.164 0.000
y 0.164 10.317 0.000
z 0.000 0.000 3.593


<r2> (average value of r2) Å2
<r2> 97.385
(<r2>)1/2 9.868