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All results from a given calculation for NH2CCNH2 (Diaminoacetylene)

using model chemistry: B3LYPultrafine/aug-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 B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-188.122475
Energy at 298.15K-188.126403
HF Energy-188.122475
Nuclear repulsion energy102.254686
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/aug-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 3610 3493 26.47      
2 A 3529 3414 0.64      
3 A 2351 2275 0.25      
4 A 1652 1598 5.81      
5 A 1190 1152 0.09      
6 A 827 800 1.80      
7 A 490 474 121.84      
8 A 423 409 0.16      
9 A 421 407 34.46      
10 A 190 184 23.73      
11 B 3610 3493 25.69      
12 B 3532 3417 4.50      
13 B 1653 1599 24.04      
14 B 1372 1327 137.49      
15 B 1190 1152 0.10      
16 B 541 523 254.59      
17 B 425 411 25.64      
18 B 190 184 25.09      

Unscaled Zero Point Vibrational Energy (zpe) 13598.2 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 13156.3 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/aug-cc-pVTZ
ABC
5.32128 0.12014 0.12013

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/aug-cc-pVTZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.003 0.602 0.051
C2 -0.003 -0.602 0.051
N3 -0.003 1.951 -0.079
N4 0.003 -1.951 -0.079
H5 -0.352 2.469 0.714
H6 0.837 2.360 -0.462
H7 0.352 -2.469 0.714
H8 -0.837 -2.360 -0.462

Atom - Atom Distances (Å)
  C1 C2 N3 N4 H5 H6 H7 H8
C11.20401.35562.55662.01252.01273.16083.1213
C21.20402.55661.35563.16083.12132.01252.0127
N31.35562.55663.90271.00931.00954.50464.4083
N42.55661.35563.90274.50464.40831.00931.0095
H52.01253.16081.00934.50461.67604.98724.9937
H62.01273.12131.00954.40831.67604.99375.0085
H73.16082.01254.50461.00934.98724.99371.6760
H83.12132.01274.40831.00954.99375.00851.6760

picture of Diaminoacetylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 174.484 C1 N3 H5 115.865
C1 N3 H6 115.870 C2 C1 N3 174.484
C2 N4 H7 115.865 C2 N4 H8 115.870
H5 N3 H6 112.242 H7 N4 H8 112.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.206      
2 C 0.206      
3 N -0.440      
4 N -0.440      
5 H 0.114      
6 H 0.119      
7 H 0.114      
8 H 0.119      


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 1.184 1.184
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.201 3.513 0.000
y 3.513 -14.500 0.000
z 0.000 0.000 -24.302
Traceless
 xyz
x -4.800 3.513 0.000
y 3.513 9.752 0.000
z 0.000 0.000 -4.951
Polar
3z2-r2-9.903
x2-y2-9.701
xy3.513
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.898 0.140 0.000
y 0.140 10.727 0.000
z 0.000 0.000 4.892


<r2> (average value of r2) Å2
<r2> 97.199
(<r2>)1/2 9.859