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

using model chemistry: B3LYP/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 B3LYP/cc-pVTZ
 hartrees
Energy at 0K-264.416094
Energy at 298.15K-264.422017
Nuclear repulsion energy209.521490
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 B3LYP/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 3198 3091 9.90      
2 A1 3162 3056 16.14      
3 A1 3148 3042 14.72      
4 A1 1611 1557 42.34      
5 A1 1439 1391 60.58      
6 A1 1164 1125 2.16      
7 A1 1084 1048 1.37      
8 A1 1011 977 4.31      
9 A1 697 673 3.35      
10 A2 1008 974 0.00      
11 A2 411 397 0.00      
12 B1 1035 1001 0.00      
13 B1 992 959 0.07      
14 B1 830 803 4.41      
15 B1 742 718 41.14      
16 B1 354 342 3.10      
17 B2 3151 3045 22.97      
18 B2 1610 1556 83.00      
19 B2 1499 1449 7.09      
20 B2 1398 1352 0.31      
21 B2 1255 1213 8.35      
22 B2 1214 1173 4.12      
23 B2 1097 1060 2.81      
24 B2 636 614 12.36      

Unscaled Zero Point Vibrational Energy (zpe) 16871.6 cm-1
Scaled (by 0.9666) Zero Point Vibrational Energy (zpe) 16308.1 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 B3LYP/cc-pVTZ
ABC
0.21086 0.20426 0.10375

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.350
C2 0.000 0.000 -1.307
C3 0.000 1.180 0.621
C4 0.000 -1.180 0.621
N5 0.000 1.192 -0.712
N6 0.000 -1.192 -0.712
H7 0.000 0.000 2.430
H8 0.000 0.000 -2.391
H9 0.000 2.146 1.115
H10 0.000 -2.146 1.115

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65601.38741.38742.38182.38181.08073.74012.15842.1584
C22.65602.25982.25981.33211.33213.73681.08403.23543.2354
C31.38742.25982.36081.33302.72152.16073.23421.08453.3625
C41.38742.25982.36082.72151.33302.16073.23423.36251.0845
N52.38181.33211.33302.72152.38463.36122.05852.06123.8054
N62.38181.33212.72151.33302.38463.36122.05853.80542.0612
H71.08073.73682.16072.16073.36123.36124.82082.51662.5166
H83.74011.08403.23423.23422.05852.05854.82084.11014.1101
H92.15843.23541.08453.36252.06123.80542.51664.11014.2912
H102.15843.23543.36251.08453.80542.06122.51664.11014.2912

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 122.210 C1 C3 H9 121.171
C1 C4 N6 122.210 C1 C4 H10 121.171
C2 N5 C3 115.975 C2 N6 C4 115.975
C3 C1 C4 116.602 C3 C1 H7 121.699
C4 C1 H7 121.699 N5 C2 N6 127.029
N5 C2 H8 116.486 N5 C3 H9 116.619
N6 C2 H8 116.486 N6 C4 H10 116.619
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.119     -0.701
2 C 0.040     0.792
3 C -0.040     0.620
4 C -0.040     0.620
5 N -0.175     -0.770
6 N -0.175     -0.770
7 H 0.129     0.212
8 H 0.118     -0.022
9 H 0.131     0.010
10 H 0.131     0.010


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 2.279 2.279
CHELPG        
AIM        
ESP 0.000 0.000 2.288 2.288


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.755 0.000 0.000
y 0.000 -37.055 0.000
z 0.000 0.000 -30.849
Traceless
 xyz
x -1.803 0.000 0.000
y 0.000 -3.753 0.000
z 0.000 0.000 5.556
Polar
3z2-r211.112
x2-y21.300
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.481 0.000 0.000
y 0.000 9.178 0.000
z 0.000 0.000 9.827


<r2> (average value of r2) Å2
<r2> 114.413
(<r2>)1/2 10.696