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

using model chemistry: HF/TZVP

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/TZVP
 hartrees
Energy at 0K-224.866030
Energy at 298.15K-224.872270
HF Energy-224.866030
Nuclear repulsion energy165.178173
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/TZVP
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' 3913 3555 119.90      
2 A' 3428 3114 0.50      
3 A' 3408 3096 2.83      
4 A' 3395 3085 5.96      
5 A' 1729 1571 10.50      
6 A' 1616 1468 13.44      
7 A' 1532 1392 12.32      
8 A' 1530 1390 24.34      
9 A' 1398 1270 2.60      
10 A' 1270 1154 1.70      
11 A' 1219 1107 31.84      
12 A' 1131 1028 57.80      
13 A' 1119 1017 0.51      
14 A' 1018 925 6.45      
15 A' 1001 910 13.12      
16 A" 1016 923 5.32      
17 A" 980 891 2.67      
18 A" 846 769 112.29      
19 A" 743 675 22.56      
20 A" 684 622 0.06      
21 A" 555 504 77.72      

Unscaled Zero Point Vibrational Energy (zpe) 16765.5 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 15233.2 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/TZVP
ABC
0.33010 0.32278 0.16320

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.066 0.643 0.000
C2 1.081 0.298 0.000
H3 1.205 -1.852 0.000
C4 0.632 -0.980 0.000
H5 -1.434 -1.643 0.000
C6 -0.739 -0.864 0.000
N7 -1.098 0.388 0.000
H8 0.001 2.031 0.000
N9 0.000 1.055 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.04342.63912.16554.18053.18473.17422.48852.1068
C21.04342.15301.35433.17722.16002.18112.04251.3201
H32.63912.15301.04302.64702.18053.21214.06503.1463
C42.16551.35431.04302.17011.37652.20543.07632.1306
H54.18053.17722.64702.17011.04362.05863.94423.0553
C63.18472.16002.18051.37651.04361.30252.98822.0565
N73.17422.18113.21212.20542.05861.30251.97641.2844
H82.48852.04254.06503.07633.94422.98821.97640.9761
N92.10681.32013.14632.13063.05532.05651.28440.9761

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 128.680 H1 C2 N9 125.701
C2 C4 H3 127.338 C2 C4 C6 104.553
C2 N9 N7 113.732 C2 N9 H8 124.946
H3 C4 C6 128.109 C4 C2 N9 105.619
C4 C6 H5 126.913 C4 C6 N7 110.792
H5 C6 N7 122.296 C6 N7 N9 105.305
N7 N9 H8 121.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.127      
2 C -0.228      
3 H 0.133      
4 C 0.000      
5 H 0.110      
6 C -0.216      
7 N -0.123      
8 H 0.248      
9 N -0.052      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.294 0.839 0.000 2.443
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.939 2.901 0.000
y 2.901 -22.263 0.000
z 0.000 0.000 -32.467
Traceless
 xyz
x -2.574 2.901 0.000
y 2.901 8.940 0.000
z 0.000 0.000 -6.366
Polar
3z2-r2-12.731
x2-y2-7.676
xy2.901
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.912 0.204 0.000
y 0.204 7.307 0.000
z 0.000 0.000 4.084


<r2> (average value of r2) Å2
<r2> 78.785
(<r2>)1/2 8.876