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

using model chemistry: BLYP/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 BLYP/cc-pVTZ
 hartrees
Energy at 0K-264.327390
Energy at 298.15K-264.333165
Nuclear repulsion energy207.756829
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 BLYP/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 3112 3103 15.49      
2 A1 3080 3070 19.24      
3 A1 3065 3055 14.76      
4 A1 1537 1533 28.83      
5 A1 1384 1380 58.10      
6 A1 1124 1121 3.15      
7 A1 1051 1048 1.16      
8 A1 970 967 3.38      
9 A1 676 674 3.05      
10 A2 966 963 0.00      
11 A2 390 389 0.00      
12 B1 991 988 0.00      
13 B1 952 949 0.01      
14 B1 798 796 3.79      
15 B1 721 719 37.62      
16 B1 329 328 3.00      
17 B2 3068 3058 27.42      
18 B2 1536 1532 70.53      
19 B2 1448 1444 4.40      
20 B2 1360 1356 0.27      
21 B2 1210 1206 11.39      
22 B2 1178 1174 0.91      
23 B2 1060 1057 3.35      
24 B2 618 616 11.46      

Unscaled Zero Point Vibrational Energy (zpe) 16311.3 cm-1
Scaled (by 0.997) Zero Point Vibrational Energy (zpe) 16262.3 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 BLYP/cc-pVTZ
ABC
0.20761 0.20051 0.10200

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.359
C2 0.000 0.000 -1.316
C3 0.000 1.190 0.626
C4 0.000 -1.190 0.626
N5 0.000 1.206 -0.719
N6 0.000 -1.206 -0.719
H7 0.000 0.000 2.447
H8 0.000 0.000 -2.406
H9 0.000 2.160 1.125
H10 0.000 -2.160 1.125

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.67491.39721.39722.40262.40261.08763.76562.17302.1730
C22.67492.27762.27761.34511.34513.76261.09063.25943.2594
C31.39722.27762.37931.34562.74722.17463.25791.09113.3868
C41.39722.27762.37932.74721.34562.17463.25793.38681.0911
N52.40261.34511.34562.74722.41103.38762.07372.07653.8378
N62.40261.34512.74721.34562.41103.38762.07373.83782.0765
H71.08763.76262.17462.17463.38763.38764.85322.53272.5327
H83.76561.09063.25793.25792.07372.07374.85324.13974.1397
H92.17303.25941.09113.38682.07653.83782.53274.13974.3206
H102.17303.25943.38681.09113.83782.07652.53274.13974.3206

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 122.304 C1 C3 H9 121.194
C1 C4 N6 122.304 C1 C4 H10 121.194
C2 N5 C3 115.659 C2 N6 C4 115.659
C3 C1 C4 116.743 C3 C1 H7 121.628
C4 C1 H7 121.628 N5 C2 N6 127.331
N5 C2 H8 116.335 N5 C3 H9 116.502
N6 C2 H8 116.335 N6 C4 H10 116.502
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.098      
2 C 0.040      
3 C -0.030      
4 C -0.030      
5 N -0.159      
6 N -0.159      
7 H 0.107      
8 H 0.102      
9 H 0.113      
10 H 0.113      


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 2.237 2.237
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 116.141
(<r2>)1/2 10.777