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

using model chemistry: B3LYPultrafine/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-264.340807
Energy at 298.15K-264.346687
Nuclear repulsion energy208.505037
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/6-31+G**
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 3216 3096 9.49      
2 A1 3191 3072 15.48      
3 A1 3172 3054 12.28      
4 A1 1618 1558 47.35      
5 A1 1441 1388 56.10      
6 A1 1163 1119 0.97      
7 A1 1079 1039 0.82      
8 A1 1012 974 3.68      
9 A1 694 668 3.19      
10 A2 1001 964 0.00      
11 A2 407 392 0.00      
12 B1 1023 985 0.00      
13 B1 980 944 0.01      
14 B1 820 790 6.72      
15 B1 734 706 42.16      
16 B1 351 337 3.58      
17 B2 3176 3057 19.92      
18 B2 1616 1556 84.83      
19 B2 1498 1442 5.55      
20 B2 1397 1345 0.25      
21 B2 1264 1217 5.10      
22 B2 1230 1184 7.84      
23 B2 1095 1054 3.69      
24 B2 633 609 10.03      

Unscaled Zero Point Vibrational Energy (zpe) 16904.7 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 16274.2 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/6-31+G**
ABC
0.20876 0.20228 0.10273

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.357
C2 0.000 0.000 -1.313
C3 0.000 1.186 0.624
C4 0.000 -1.186 0.624
N5 0.000 1.198 -0.716
N6 0.000 -1.198 -0.716
H7 0.000 0.000 2.442
H8 0.000 0.000 -2.400
H9 0.000 2.156 1.117
H10 0.000 -2.156 1.117

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.67001.39461.39462.39472.39471.08493.75732.16892.1689
C22.67002.27082.27081.33861.33863.75491.08733.24843.2484
C31.39462.27082.37201.33982.73492.17113.24801.08813.3779
C41.39462.27082.37202.73491.33982.17113.24803.37791.0881
N52.39471.33861.33982.73492.39663.37792.06682.06833.8223
N62.39471.33862.73491.33982.39663.37792.06683.82232.0683
H71.08493.75492.17112.17113.37793.37794.84222.53022.5302
H83.75731.08733.24803.24802.06682.06684.84224.12544.1254
H92.16893.24841.08813.37792.06833.82232.53024.12544.3113
H102.16893.24843.37791.08813.82232.06832.53024.12544.3113

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 122.264 C1 C3 H9 121.277
C1 C4 N6 122.264 C1 C4 H10 121.277
C2 N5 C3 115.946 C2 N6 C4 115.946
C3 C1 C4 116.522 C3 C1 H7 121.739
C4 C1 H7 121.739 N5 C2 N6 127.058
N5 C2 H8 116.471 N5 C3 H9 116.459
N6 C2 H8 116.471 N6 C4 H10 116.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.141      
2 C 0.050      
3 C -0.169      
4 C -0.169      
5 N -0.206      
6 N -0.206      
7 H 0.141      
8 H 0.137      
9 H 0.140      
10 H 0.140      


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 2.476 2.476
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.283 0.000 0.000
y 0.000 -37.899 0.004
z 0.000 0.004 -31.095
Traceless
 xyz
x -1.786 0.000 0.000
y 0.000 -4.210 0.004
z 0.000 0.004 5.996
Polar
3z2-r211.993
x2-y21.616
xy0.000
xz0.000
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.965 0.000 0.000
y 0.000 9.686 0.004
z 0.000 0.004 10.093


<r2> (average value of r2) Å2
<r2> 115.654
(<r2>)1/2 10.754