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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-224.803283
Energy at 298.15K-224.809529
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' 3940 3556 110.45      
2 A' 3448 3112 1.35      
3 A' 3427 3093 5.40      
4 A' 3413 3081 8.74      
5 A' 1748 1578 11.19      
6 A' 1639 1479 12.86      
7 A' 1551 1400 33.90      
8 A' 1546 1395 0.83      
9 A' 1406 1269 3.36      
10 A' 1283 1158 3.12      
11 A' 1230 1111 27.04      
12 A' 1143 1032 53.43      
13 A' 1132 1022 0.30      
14 A' 1018 919 6.89      
15 A' 998 901 13.99      
16 A" 1026 926 2.65      
17 A" 986 890 2.65      
18 A" 856 773 89.68      
19 A" 748 675 26.36      
20 A" 690 623 0.00      
21 A" 566 511 89.53      

Unscaled Zero Point Vibrational Energy (zpe) 16897.1 cm-1
Scaled (by 0.9026) Zero Point Vibrational Energy (zpe) 15251.3 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
0.32954 0.32168 0.16278

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 2.081 0.721 0.000
C2 1.096 0.302 0.000
H3 1.256 -1.880 0.000
C4 0.663 -0.990 0.000
H5 -1.475 -1.659 0.000
C6 -0.746 -0.874 0.000
N7 -1.128 0.371 0.000
H8 -0.045 2.066 0.000
N9 0.000 1.076 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07032.72812.22194.27903.24583.22772.51632.1111
C21.07032.18751.36253.23382.18552.22472.10101.3415
H32.72812.18751.06942.73942.23963.27754.15453.2108
C42.22191.36251.06942.24011.41312.24833.13662.1689
H54.27903.23382.73942.24011.07142.05943.99013.1073
C63.24582.18552.23961.41311.07141.30223.02262.0877
N73.22772.22473.27752.24832.05941.30222.01131.3299
H82.51632.10104.15453.13663.99013.02262.01130.9914
N92.11111.34153.21082.16893.10732.08771.32990.9914

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 131.568 H1 C2 N9 121.767
C2 C4 H3 127.782 C2 C4 C6 103.869
C2 N9 N7 112.771 C2 N9 H8 127.840
H3 C4 C6 128.349 C4 C2 N9 106.665
C4 C6 H5 128.217 C4 C6 N7 111.728
H5 C6 N7 120.055 C6 N7 N9 104.966
N7 N9 H8 119.389
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 0.174 0.136    
2 C 0.130 -0.051    
3 H 0.156 0.145    
4 C -0.303 -0.302    
5 H 0.153 0.076    
6 C 0.094 0.232    
7 N -0.313 -0.496    
8 H 0.327 0.291    
9 N -0.418 -0.032    


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.288 0.793 0.000 2.422
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.362 2.799 0.000
y 2.799 -21.879 0.000
z 0.000 0.000 -31.818
Traceless
 xyz
x -2.514 2.799 0.000
y 2.799 8.711 0.000
z 0.000 0.000 -6.197
Polar
3z2-r2-12.395
x2-y2-7.483
xy2.799
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.355 0.266 0.000
y 0.266 6.865 0.000
z 0.000 0.000 2.537


<r2> (average value of r2) Å2
<r2> 78.601
(<r2>)1/2 8.866