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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-224.690509
Energy at 298.15K-224.696882
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 HF/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' 3972 3586 118.01      
2 A' 3491 3152 0.41      
3 A' 3474 3137 5.28      
4 A' 3461 3125 2.41      
5 A' 1732 1564 17.85      
6 A' 1615 1459 18.01      
7 A' 1548 1398 18.02      
8 A' 1539 1390 5.36      
9 A' 1406 1269 2.51      
10 A' 1270 1146 0.22      
11 A' 1225 1106 28.32      
12 A' 1152 1040 0.61      
13 A' 1115 1007 46.81      
14 A' 1037 936 5.75      
15 A' 1027 928 21.53      
16 A" 1088 982 0.01      
17 A" 1026 926 5.52      
18 A" 896 809 90.49      
19 A" 759 686 163.24      
20 A" 733 662 17.64      
21 A" 695 628 28.48      

Unscaled Zero Point Vibrational Energy (zpe) 17131.1 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 15467.7 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 HF/6-31G
ABC
0.32367 0.31830 0.16048

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.089 0.717 0.000
C2 1.105 0.309 0.000
H3 1.259 -1.871 0.000
C4 0.667 -0.986 0.000
H5 -1.464 -1.681 0.000
C6 -0.748 -0.892 0.000
N7 -1.139 0.362 0.000
H8 -0.056 2.077 0.000
N9 0.000 1.091 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.06552.71792.21814.28633.26143.24742.53992.1224
C21.06552.18591.36683.24922.20792.24412.11441.3530
H32.71792.18591.06522.72952.23243.27684.16113.2182
C42.21811.36681.06522.24151.41762.25343.14642.1807
H54.28633.24922.72952.24151.06512.06864.01253.1341
C63.26142.20792.23241.41761.06511.31443.04872.1193
N73.24742.24413.27682.25342.06861.31442.02781.3518
H82.53992.11444.16113.14644.01253.04872.02780.9877
N92.12241.35303.21822.18073.13412.11931.35180.9877

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 131.154 H1 C2 N9 122.248
C2 C4 H3 127.576 C2 C4 C6 104.910
C2 N9 N7 112.130 C2 N9 H8 128.516
H3 C4 C6 127.515 C4 C2 N9 106.598
C4 C6 H5 128.510 C4 C6 N7 111.084
H5 C6 N7 120.406 C6 N7 N9 105.279
N7 N9 H8 119.354
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.243 0.134    
2 C 0.176 -0.027    
3 H 0.218 0.152    
4 C -0.369 -0.336    
5 H 0.222 0.064    
6 C 0.030 0.305    
7 N -0.251 -0.565    
8 H 0.405 0.284    
9 N -0.673 -0.010    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.559 0.619 0.000 2.633
CHELPG 2.511 0.620 0.000 2.587
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.199 3.107 0.000
y 3.107 -22.169 0.000
z 0.000 0.000 -32.365
Traceless
 xyz
x -2.932 3.107 0.000
y 3.107 9.113 0.000
z 0.000 0.000 -6.181
Polar
3z2-r2-12.362
x2-y2-8.030
xy3.107
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.229 0.279 0.000
y 0.279 6.761 0.000
z 0.000 0.000 2.189


<r2> (average value of r2) Å2
<r2> 79.736
(<r2>)1/2 8.930