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All results from a given calculation for C4H4N2 (1,3-Diazine)

using model chemistry: B97D3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/6-31G*
 hartrees
Energy at 0K-264.150007
Energy at 298.15K-264.155751
HF Energy-264.150007
Nuclear repulsion energy 
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 B97D3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3156 3094 18.45      
2 A1 3124 3062 31.04      
3 A1 3108 3047 15.48      
4 A1 1579 1548 33.40      
5 A1 1411 1383 56.45      
6 A1 1145 1123 3.48      
7 A1 1068 1047 0.76      
8 A1 983 964 4.25      
9 A1 683 669 3.58      
10 A2 965 946 0.00      
11 A2 389 381 0.00      
12 B1 982 962 0.02      
13 B1 943 924 0.02      
14 B1 796 781 1.98      
15 B1 717 703 33.90      
16 B1 326 320 2.99      
17 B2 3111 3050 42.64      
18 B2 1577 1546 71.24      
19 B2 1473 1445 6.88      
20 B2 1379 1352 0.18      
21 B2 1250 1226 4.11      
22 B2 1219 1195 6.26      
23 B2 1075 1054 3.04      
24 B2 620 608 10.42      

Unscaled Zero Point Vibrational Energy (zpe) 16538.8 cm-1
Scaled (by 0.9804) Zero Point Vibrational Energy (zpe) 16214.6 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 B97D3/6-31G*
ABC
0.20757 0.20015 0.10190

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.362
C2 0.000 0.000 -1.312
C3 0.000 1.189 0.625
C4 0.000 -1.189 0.625
N5 0.000 1.208 -0.721
N6 0.000 -1.208 -0.721
H7 0.000 0.000 2.452
H8 0.000 0.000 -2.406
H9 0.000 2.163 1.123
H10 0.000 -2.163 1.123

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.67431.39921.39922.40742.40741.08983.76762.17652.1765
C22.67432.27332.27331.34481.34483.76421.09323.25723.2572
C31.39922.27332.37881.34582.74892.17993.25561.09373.3894
C41.39922.27332.37882.74891.34582.17993.25563.38941.0937
N52.40741.34481.34582.74892.41523.39452.07302.07643.8420
N62.40741.34482.74891.34582.41523.39452.07303.84202.0764
H71.08983.76422.17992.17993.39453.39454.85742.53892.5389
H83.76761.09323.25563.25562.07302.07304.85744.13874.1387
H92.17653.25721.09373.38942.07643.84202.53894.13874.3265
H102.17653.25723.38941.09373.84202.07642.53894.13874.3265

picture of 1,3-Diazine state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C3 N5 122.490 C1 C3 H9 121.223
C1 C4 N6 122.490 C1 C4 H10 121.223
C2 N5 C3 115.359 C2 N6 C4 115.359
C3 C1 C4 116.502 C3 C1 H7 121.749
C4 C1 H7 121.749 N5 C2 N6 127.799
N5 C2 H8 116.101 N5 C3 H9 116.287
N6 C2 H8 116.101 N6 C4 H10 116.287
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.143      
2 C 0.156      
3 C 0.045      
4 C 0.045      
5 N -0.369      
6 N -0.369      
7 H 0.154      
8 H 0.162      
9 H 0.159      
10 H 0.159      


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 2.264 2.264
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.064 0.000 0.000
y 0.000 -36.339 0.000
z 0.000 0.000 -30.246
Traceless
 xyz
x -1.771 0.000 0.000
y 0.000 -3.684 0.000
z 0.000 0.000 5.455
Polar
3z2-r210.911
x2-y21.275
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.069 0.000 0.000
y 0.000 8.611 0.000
z 0.000 0.000 9.326


<r2> (average value of r2) Å2
<r2> 115.655
(<r2>)1/2 10.754