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

using model chemistry: B1B95/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 B1B95/cc-pVTZ
 hartrees
Energy at 0K-264.297608
Energy at 298.15K-264.303526
Nuclear repulsion energy210.481603
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 B1B95/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 3229 3091 8.19      
2 A1 3184 3047 15.95      
3 A1 3171 3035 16.30      
4 A1 1645 1574 51.97      
5 A1 1454 1392 56.09      
6 A1 1175 1125 1.38      
7 A1 1091 1044 0.95      
8 A1 1020 976 5.31      
9 A1 690 661 3.64      
10 A2 1016 972 0.00      
11 A2 405 388 0.00      
12 B1 1043 999 0.00      
13 B1 999 956 0.10      
14 B1 835 799 4.39      
15 B1 744 712 40.68      
16 B1 348 333 2.97      
17 B2 3175 3038 23.02      
18 B2 1645 1574 86.76      
19 B2 1510 1445 7.80      
20 B2 1397 1337 0.23      
21 B2 1279 1224 3.00      
22 B2 1238 1185 8.21      
23 B2 1104 1057 2.47      
24 B2 624 597 12.43      

Unscaled Zero Point Vibrational Energy (zpe) 17010.1 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 16280.4 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 B1B95/cc-pVTZ
ABC
0.21293 0.20608 0.10473

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.344
C2 0.000 0.000 -1.298
C3 0.000 1.175 0.616
C4 0.000 -1.175 0.616
N5 0.000 1.187 -0.709
N6 0.000 -1.187 -0.709
H7 0.000 0.000 2.423
H8 0.000 0.000 -2.381
H9 0.000 2.139 1.110
H10 0.000 -2.139 1.110

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.64221.38171.38172.37172.37171.07883.72492.15142.1514
C22.64222.24652.24651.32511.32513.72101.08273.22113.2211
C31.38172.24652.34951.32602.70852.15453.21961.08313.3500
C41.38172.24652.34952.70851.32602.15453.21963.35001.0831
N52.37171.32511.32602.70852.37413.34952.05022.05353.7910
N62.37171.32512.70851.32602.37413.34952.05023.79102.0535
H71.07883.72102.15452.15453.34953.34954.80372.50922.5092
H83.72491.08273.21963.21962.05022.05024.80374.09434.0943
H92.15143.22111.08313.35002.05353.79102.50924.09434.2773
H102.15143.22113.35001.08313.79102.05352.50924.09434.2773

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 122.295 C1 C3 H9 121.112
C1 C4 N6 122.295 C1 C4 H10 121.112
C2 N5 C3 115.856 C2 N6 C4 115.856
C3 C1 C4 116.473 C3 C1 H7 121.763
C4 C1 H7 121.763 N5 C2 N6 127.224
N5 C2 H8 116.388 N5 C3 H9 116.593
N6 C2 H8 116.388 N6 C4 H10 116.593
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.156      
2 C 0.032      
3 C -0.045      
4 C -0.045      
5 N -0.186      
6 N -0.186      
7 H 0.154      
8 H 0.134      
9 H 0.149      
10 H 0.149      


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 2.257 2.257
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.468 0.000 0.000
y 0.000 -36.517 0.000
z 0.000 0.000 -30.413
Traceless
 xyz
x -2.003 0.000 0.000
y 0.000 -3.576 0.000
z 0.000 0.000 5.580
Polar
3z2-r211.160
x2-y21.049
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.450 0.000 0.000
y 0.000 9.058 0.000
z 0.000 0.000 9.680


<r2> (average value of r2) Å2
<r2> 113.315
(<r2>)1/2 10.645