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

using model chemistry: MP2/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 MP2/cc-pVTZ
 hartrees
Energy at 0K-263.793436
Energy at 298.15K-263.799350
Nuclear repulsion energy209.007095
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 MP2/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 3249 3085 4.99      
2 A1 3219 3057 12.13      
3 A1 3202 3041 9.34      
4 A1 1612 1530 19.78      
5 A1 1436 1364 45.08      
6 A1 1160 1101 2.71      
7 A1 1080 1025 1.10      
8 A1 1010 959 3.67      
9 A1 686 651 3.93      
10 A2 997 947 0.00      
11 A2 408 388 0.00      
12 B1 1023 972 0.03      
13 B1 987 937 0.05      
14 B1 826 784 8.49      
15 B1 752 714 36.36      
16 B1 356 338 3.36      
17 B2 3206 3044 14.16      
18 B2 1619 1538 50.79      
19 B2 1493 1418 4.91      
20 B2 1395 1324 0.10      
21 B2 1334 1267 0.69      
22 B2 1241 1178 6.60      
23 B2 1094 1038 4.00      
24 B2 623 591 12.47      

Unscaled Zero Point Vibrational Energy (zpe) 17003.2 cm-1
Scaled (by 0.9495) Zero Point Vibrational Energy (zpe) 16144.6 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 MP2/cc-pVTZ
ABC
0.21028 0.20272 0.10322

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/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 1.184 0.623
C4 0.000 -1.184 0.623
N5 0.000 1.199 -0.715
N6 0.000 -1.199 -0.715
H7 0.000 0.000 2.430
H8 0.000 0.000 -2.389
H9 0.000 2.147 1.118
H10 0.000 -2.147 1.118

Atom - Atom Distances (Å)
  C1 C2 C3 C4 N5 N6 H7 H8 H9 H10
C12.65721.38891.38892.38762.38761.07993.73942.15952.1595
C22.65722.26442.26441.33721.33723.73711.08213.23883.2388
C31.38892.26442.36721.33812.73242.15993.23671.08293.3670
C41.38892.26442.36722.73241.33812.15993.23673.36701.0829
N52.38761.33721.33812.73242.39753.36542.05942.06333.8147
N62.38761.33722.73241.33812.39753.36542.05943.81472.0633
H71.07993.73712.15992.15993.36543.36544.81922.51612.5161
H83.73941.08213.23673.23672.05942.05944.81924.11214.1121
H92.15953.23881.08293.36702.06333.81472.51614.11214.2939
H102.15953.23883.36701.08293.81472.06332.51614.11214.2939

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 122.202 C1 C3 H9 121.271
C1 C4 N6 122.202 C1 C4 H10 121.271
C2 N5 C3 115.649 C2 N6 C4 115.649
C3 C1 C4 116.895 C3 C1 H7 121.553
C4 C1 H7 121.553 N5 C2 N6 127.402
N5 C2 H8 116.299 N5 C3 H9 116.527
N6 C2 H8 116.299 N6 C4 H10 116.527
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability