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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B97D3/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-187.950739
Energy at 298.15K-187.954297
HF Energy-187.950739
Nuclear repulsion energy101.330563
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/aug-cc-pVDZ
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 3520 3520 13.89      
2 A 3434 3434 0.19      
3 A 2310 2310 0.02      
4 A 1602 1602 6.58      
5 A 1160 1160 0.15      
6 A 811 811 1.53      
7 A 496 496 116.20      
8 A 415 415 9.18      
9 A 357 357 10.92      
10 A 120 120 18.32      
11 B 3519 3519 13.45      
12 B 3438 3438 1.91      
13 B 1603 1603 14.00      
14 B 1355 1355 118.19      
15 B 1159 1159 0.51      
16 B 559 559 260.99      
17 B 354 354 14.93      
18 B 117 117 19.74      

Unscaled Zero Point Vibrational Energy (zpe) 13163.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13163.0 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/aug-cc-pVDZ
ABC
5.16501 0.11804 0.11802

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.613 0.041
C2 -0.006 -0.613 0.041
N3 -0.006 1.969 -0.076
N4 0.006 -1.969 -0.076
H5 -0.345 2.476 0.737
H6 0.842 2.385 -0.452
H7 0.345 -2.476 0.737
H8 -0.842 -2.385 -0.452

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.22541.36122.58412.02002.02073.18453.1540
C21.22542.58411.36123.18453.15402.02002.0207
N31.36122.58413.93751.01651.01674.53244.4491
N42.58411.36123.93754.53244.44911.01651.0167
H52.02003.18451.01654.53241.68285.00055.0291
H62.02073.15401.01674.44911.68285.02915.0583
H73.18452.02004.53241.01655.00055.02911.6828
H83.15402.02074.44911.01675.02915.05831.6828

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.962 C1 N3 H5 115.574
C1 N3 H6 115.617 C2 C1 N3 174.962
C2 N4 H7 115.574 C2 N4 H8 115.617
H5 N3 H6 111.716 H7 N4 H8 111.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.075      
2 C 0.075      
3 N -0.010      
4 N -0.010      
5 H -0.047      
6 H -0.018      
7 H -0.047      
8 H -0.018      


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 1.324 1.324
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.968 4.069 0.000
y 4.069 -14.800 0.000
z 0.000 0.000 -24.254
Traceless
 xyz
x -4.441 4.069 0.000
y 4.069 9.311 0.000
z 0.000 0.000 -4.869
Polar
3z2-r2-9.739
x2-y2-9.168
xy4.069
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.029 0.488 0.000
y 0.488 11.365 0.000
z 0.000 0.000 4.990


<r2> (average value of r2) Å2
<r2> 98.631
(<r2>)1/2 9.931