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

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 C2V 1A1
Energy calculated at B3LYPultrafine/aug-cc-pVTZ
 hartrees
Energy at 0K-264.419871
Energy at 298.15K-264.425792
HF Energy-264.419871
Nuclear repulsion energy209.516971
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 A1 3197 3093 8.87      
2 A1 3164 3061 13.21      
3 A1 3149 3047 14.17      
4 A1 1609 1556 44.39      
5 A1 1438 1391 59.33      
6 A1 1163 1125 1.60      
7 A1 1083 1048 1.09      
8 A1 1010 977 3.80      
9 A1 696 673 2.80      
10 A2 1009 977 0.00      
11 A2 411 397 0.00      
12 B1 1036 1003 0.00      
13 B1 991 959 0.06      
14 B1 828 801 5.29      
15 B1 741 717 40.53      
16 B1 353 342 3.48      
17 B2 3152 3050 18.21      
18 B2 1608 1555 83.98      
19 B2 1497 1449 5.58      
20 B2 1398 1352 0.34      
21 B2 1252 1211 8.89      
22 B2 1212 1173 4.70      
23 B2 1095 1059 2.80      
24 B2 635 615 11.49      

Unscaled Zero Point Vibrational Energy (zpe) 16863.3 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 16315.2 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
0.21073 0.20435 0.10375

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.351
C2 0.000 0.000 -1.311
C3 0.000 1.181 0.621
C4 0.000 -1.181 0.621
N5 0.000 1.189 -0.711
N6 0.000 -1.189 -0.711
H7 0.000 0.000 2.431
H8 0.000 0.000 -2.396
H9 0.000 2.147 1.116
H10 0.000 -2.147 1.116

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.66231.38891.38892.38062.38061.08023.74702.15952.1595
C22.66232.26472.26471.33141.33143.74251.08473.24023.2402
C31.38892.26472.36281.33242.71892.16183.23981.08483.3647
C41.38892.26472.36282.71891.33242.16183.23983.36471.0848
N52.38061.33141.33242.71892.37743.36012.06162.06333.8032
N62.38061.33142.71891.33242.37743.36012.06163.80322.0633
H71.08023.74252.16182.16183.36013.36014.82722.51762.5176
H83.74701.08473.23983.23982.06162.06164.82724.11594.1159
H92.15953.24021.08483.36472.06333.80322.51764.11594.2932
H102.15953.24023.36471.08483.80322.06332.51764.11594.2932

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 122.036 C1 C3 H9 121.124
C1 C4 N6 122.036 C1 C4 H10 121.124
C2 N5 C3 116.458 C2 N6 C4 116.458
C3 C1 C4 116.558 C3 C1 H7 121.721
C4 C1 H7 121.721 N5 C2 N6 126.454
N5 C2 H8 116.773 N5 C3 H9 116.841
N6 C2 H8 116.773 N6 C4 H10 116.841
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 -0.123      
2 C -0.457      
3 C -0.278      
4 C -0.278      
5 N -0.381      
6 N -0.381      
7 H 0.224      
8 H 0.511      
9 H 0.581      
10 H 0.581      


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 2.359 2.359
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.049 0.000 0.000
y 0.000 -37.584 0.000
z 0.000 0.000 -31.080
Traceless
 xyz
x -1.717 0.000 0.000
y 0.000 -4.019 0.000
z 0.000 0.000 5.736
Polar
3z2-r211.472
x2-y21.535
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.487 0.000 0.000
y 0.000 9.962 0.000
z 0.000 0.000 10.436


<r2> (average value of r2) Å2
<r2> 114.638
(<r2>)1/2 10.707