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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-262.790632
Energy at 298.15K-262.796838
HF Energy-262.790632
Nuclear repulsion energy211.727819
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 HF/Def2TZVPP
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 3367 3051 7.67      
2 A1 3339 3027 22.04      
3 A1 3319 3008 13.03      
4 A1 1778 1611 99.10      
5 A1 1561 1415 89.16      
6 A1 1252 1135 1.19      
7 A1 1158 1049 2.51      
8 A1 1096 993 4.87      
9 A1 749 679 3.15      
10 A2 1133 1027 0.00      
11 A2 461 417 0.00      
12 B1 1161 1053 0.02      
13 B1 1102 999 0.70      
14 B1 911 825 8.32      
15 B1 785 712 53.97      
16 B1 413 374 3.10      
17 B2 3323 3012 27.34      
18 B2 1778 1611 138.24      
19 B2 1629 1476 22.79      
20 B2 1511 1370 1.42      
21 B2 1347 1221 13.33      
22 B2 1198 1085 7.86      
23 B2 1136 1030 7.09      
24 B2 683 619 13.89      

Unscaled Zero Point Vibrational Energy (zpe) 18094.3 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 16400.7 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 HF/Def2TZVPP
ABC
0.21480 0.20902 0.10594

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.338
C2 0.000 0.000 -1.286
C3 0.000 1.166 0.610
C4 0.000 -1.166 0.610
N5 0.000 1.177 -0.705
N6 0.000 -1.177 -0.705
H7 0.000 0.000 2.408
H8 0.000 0.000 -2.358
H9 0.000 2.123 1.094
H10 0.000 -2.123 1.094

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.62391.37381.37382.35772.35771.07013.69542.13682.1368
C22.62392.22622.22621.31281.31283.69401.07153.18963.1896
C31.37382.22622.33101.31562.68682.14213.18881.07273.3238
C41.37382.22622.33102.68681.31562.14213.18883.32381.0727
N52.35771.31281.31562.68682.35443.32802.02902.03283.7588
N62.35771.31282.68681.31562.35443.32802.02903.75882.0328
H71.07013.69402.14212.14213.32803.32804.76542.49632.4963
H83.69541.07153.18883.18882.02902.02904.76544.05254.0525
H92.13683.18961.07273.32382.03283.75882.49634.05254.2457
H102.13683.18963.32381.07273.75882.03282.49634.05254.2457

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 122.471 C1 C3 H9 121.225
C1 C4 N6 122.471 C1 C4 H10 121.225
C2 N5 C3 115.764 C2 N6 C4 115.764
C3 C1 C4 116.076 C3 C1 H7 121.962
C4 C1 H7 121.962 N5 C2 N6 127.454
N5 C2 H8 116.273 N5 C3 H9 116.304
N6 C2 H8 116.273 N6 C4 H10 116.304
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.114      
2 C 0.318      
3 C 0.135      
4 C 0.135      
5 N -0.422      
6 N -0.422      
7 H 0.103      
8 H 0.088      
9 H 0.090      
10 H 0.090      


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 2.350 2.350
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -36.327 0.000 0.000
y 0.000 -37.020 0.000
z 0.000 0.000 -30.716
Traceless
 xyz
x -2.459 0.000 0.000
y 0.000 -3.499 0.000
z 0.000 0.000 5.958
Polar
3z2-r211.915
x2-y20.693
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.829 0.000 0.000
y 0.000 8.876 0.000
z 0.000 0.000 9.285


<r2> (average value of r2) Å2
<r2> 112.613
(<r2>)1/2 10.612