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All results from a given calculation for C3H4N2 (1H-Pyrazole)

using model chemistry: MP2=FULL/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2=FULL/6-31G**
 hartrees
Energy at 0K-225.559198
Energy at 298.15K-225.565177
HF Energy-224.799851
Nuclear repulsion energy 
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=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3744 3498 88.98      
2 A' 3368 3147 0.29      
3 A' 3349 3129 1.46      
4 A' 3339 3120 2.62      
5 A' 1586 1482 5.31      
6 A' 1534 1433 6.59      
7 A' 1493 1395 11.54      
8 A' 1406 1314 3.31      
9 A' 1311 1225 2.34      
10 A' 1207 1127 0.82      
11 A' 1182 1105 12.01      
12 A' 1090 1019 13.37      
13 A' 1083 1012 24.08      
14 A' 942 881 4.04      
15 A' 920 860 7.26      
16 A" 852 796 11.57      
17 A" 813 760 26.69      
18 A" 734 686 62.80      
19 A" 701 655 36.21      
20 A" 625 584 0.56      
21 A" 540 505 42.45      

Unscaled Zero Point Vibrational Energy (zpe) 15909.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 14865.5 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=FULL/6-31G**
ABC
0.32166 0.31376 0.15883

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.103 0.730 0.000
C2 1.114 0.306 0.000
H3 1.260 -1.892 0.000
C4 0.661 -1.000 0.000
H5 -1.473 -1.683 0.000
C6 -0.739 -0.896 0.000
N7 -1.151 0.386 0.000
H8 -0.046 2.089 0.000
N9 0.000 1.084 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07532.75422.25244.31413.27443.27192.54172.1321
C21.07532.20301.38293.26402.20952.26702.12671.3589
H32.75422.20301.07462.74162.23393.31704.18933.2316
C42.25241.38291.07462.24071.40392.28113.16852.1861
H54.31413.26402.74162.24071.07622.09364.03283.1346
C63.27442.20952.23391.40391.07621.34633.06422.1133
N73.27192.26703.31702.28112.09361.34632.03031.3462
H82.54172.12674.18933.16854.03283.06422.03031.0059
N92.13211.35893.23162.18613.13462.11331.34621.0059

picture of 1H-Pyrazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C2 C4 132.378 H1 C2 N9 121.874
C2 C4 H3 126.935 C2 C4 C6 104.902
C2 N9 N7 113.866 C2 N9 H8 127.503
H3 C4 C6 128.163 C4 C2 N9 105.748
C4 C6 H5 128.757 C4 C6 N7 112.063
H5 C6 N7 119.180 C6 N7 N9 103.421
N7 N9 H8 118.631
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability