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

using model chemistry: CCD/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 CCD/6-31G*
 hartrees
Energy at 0K-225.517424
Energy at 298.15K-225.523394
HF Energy-224.790956
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 CCD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3705 3506 85.45      
2 A' 3315 3137 0.55      
3 A' 3296 3119 2.58      
4 A' 3284 3108 4.34      
5 A' 1624 1537 6.67      
6 A' 1548 1465 9.55      
7 A' 1484 1404 18.94      
8 A' 1433 1356 4.75      
9 A' 1324 1253 2.49      
10 A' 1226 1160 1.60      
11 A' 1181 1118 19.07      
12 A' 1092 1034 23.17      
13 A' 1087 1029 17.04      
14 A' 956 905 4.78      
15 A' 936 886 8.21      
16 A" 864 818 14.46      
17 A" 818 774 6.56      
18 A" 753 713 89.76      
19 A" 700 662 22.69      
20 A" 631 597 0.01      
21 A" 510 482 64.00      

Unscaled Zero Point Vibrational Energy (zpe) 15881.6 cm-1
Scaled (by 0.9465) Zero Point Vibrational Energy (zpe) 15031.9 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 CCD/6-31G*
ABC
0.32216 0.31401 0.15902

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.107 0.731 0.000
C2 1.112 0.305 0.000
H3 1.265 -1.898 0.000
C4 0.665 -0.998 0.000
H5 -1.482 -1.684 0.000
C6 -0.744 -0.890 0.000
N7 -1.147 0.380 0.000
H8 -0.051 2.093 0.000
N9 0.000 1.085 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08222.76052.25184.32583.28003.27302.55142.1361
C21.08222.20851.37813.26882.20792.26052.13281.3579
H32.76052.20851.08162.75612.24833.31844.20273.2402
C42.25181.37811.08162.25381.41342.27703.17352.1869
H54.32583.26882.75612.25381.08342.09074.03923.1404
C63.28002.20792.24831.41341.08341.33293.06332.1109
N73.27302.26053.31842.27702.09071.33292.03421.3466
H82.55142.13284.20273.17354.03923.06332.03421.0097
N92.13611.35793.24022.18693.14042.11091.34661.0097

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 132.107 H1 C2 N9 121.775
C2 C4 H3 127.343 C2 C4 C6 104.539
C2 N9 N7 113.397 C2 N9 H8 127.923
H3 C4 C6 128.118 C4 C2 N9 106.118
C4 C6 H5 128.545 C4 C6 N7 111.986
H5 C6 N7 119.468 C6 N7 N9 103.959
N7 N9 H8 118.680
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability