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

using model chemistry: mPW1PW91/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-311G**
 hartrees
Energy at 0K-264.317071
Energy at 298.15K-264.322998
Nuclear repulsion energy209.746317
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 mPW1PW91/6-311G**
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 3090 7.74      
2 A1 3191 3053 16.70      
3 A1 3177 3039 14.01      
4 A1 1643 1572 50.08      
5 A1 1452 1389 57.93      
6 A1 1175 1124 0.89      
7 A1 1090 1043 1.35      
8 A1 1024 980 5.36      
9 A1 699 668 4.02      
10 A2 1012 968 0.00      
11 A2 408 390 0.00      
12 B1 1037 992 0.00      
13 B1 995 952 0.03      
14 B1 835 798 5.05      
15 B1 745 713 45.45      
16 B1 351 336 3.11      
17 B2 3180 3042 22.47      
18 B2 1643 1572 86.90      
19 B2 1506 1441 8.81      
20 B2 1395 1335 0.26      
21 B2 1280 1224 3.11      
22 B2 1240 1186 9.23      
23 B2 1104 1057 3.78      
24 B2 634 607 11.20      

Unscaled Zero Point Vibrational Energy (zpe) 17022.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 16285.6 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 mPW1PW91/6-311G**
ABC
0.21150 0.20457 0.10399

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.349
C2 0.000 0.000 -1.302
C3 0.000 1.179 0.618
C4 0.000 -1.179 0.618
N5 0.000 1.192 -0.712
N6 0.000 -1.192 -0.712
H7 0.000 0.000 2.431
H8 0.000 0.000 -2.388
H9 0.000 2.146 1.112
H10 0.000 -2.146 1.112

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65131.38701.38702.38112.38111.08223.73712.15952.1595
C22.65132.25332.25331.32971.32973.73351.08583.23023.2302
C31.38702.25332.35751.33072.71842.16263.22901.08623.3616
C41.38702.25332.35752.71841.33072.16263.22903.36161.0862
N52.38111.32971.33072.71842.38343.36202.05612.05883.8040
N62.38111.32972.71841.33072.38343.36202.05613.80402.0588
H71.08223.73352.16262.16263.36203.36204.81932.51962.5196
H83.73711.08583.22903.22902.05612.05614.81934.10544.1054
H92.15953.23021.08623.36162.05883.80402.51964.10544.2929
H102.15953.23023.36161.08623.80402.05882.51964.10544.2929

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 122.359 C1 C3 H9 121.180
C1 C4 N6 122.359 C1 C4 H10 121.180
C2 N5 C3 115.776 C2 N6 C4 115.776
C3 C1 C4 116.397 C3 C1 H7 121.801
C4 C1 H7 121.801 N5 C2 N6 127.334
N5 C2 H8 116.333 N5 C3 H9 116.461
N6 C2 H8 116.333 N6 C4 H10 116.461
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.235      
2 C 0.146      
3 C 0.104      
4 C 0.104      
5 N -0.316      
6 N -0.316      
7 H 0.118      
8 H 0.132      
9 H 0.132      
10 H 0.132      


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 2.307 2.307
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.586 0.000 0.000
y 0.000 -36.591 0.000
z 0.000 0.000 -30.316
Traceless
 xyz
x -2.133 0.000 0.000
y 0.000 -3.640 0.000
z 0.000 0.000 5.773
Polar
3z2-r211.546
x2-y21.005
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.763 0.000 0.000
y 0.000 8.632 0.000
z 0.000 0.000 9.295


<r2> (average value of r2) Å2
<r2> 113.979
(<r2>)1/2 10.676