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

using model chemistry: B3LYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-226.282631
Energy at 298.15K-226.288644
Nuclear repulsion energy163.449319
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 B3LYP/6-311+G(3df,2p)
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' 3668 3547 85.79      
2 A' 3266 3158 0.31      
3 A' 3248 3141 1.07      
4 A' 3234 3127 2.71      
5 A' 1566 1514 6.35      
6 A' 1478 1429 6.70      
7 A' 1421 1374 12.48      
8 A' 1386 1340 5.21      
9 A' 1283 1241 2.02      
10 A' 1178 1140 0.20      
11 A' 1143 1105 21.35      
12 A' 1057 1022 5.99      
13 A' 1048 1014 37.01      
14 A' 943 912 4.77      
15 A' 926 895 9.43      
16 A" 907 877 4.43      
17 A" 855 827 7.58      
18 A" 759 734 95.78      
19 A" 691 668 18.22      
20 A" 641 620 0.09      
21 A" 534 517 55.99      

Unscaled Zero Point Vibrational Energy (zpe) 15615.9 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 15100.5 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 B3LYP/6-311+G(3df,2p)
ABC
0.32292 0.31673 0.15990

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.098 0.727 0.000
C2 1.107 0.307 0.000
H3 1.263 -1.888 0.000
C4 0.663 -0.995 0.000
H5 -1.475 -1.680 0.000
C6 -0.743 -0.890 0.000
N7 -1.143 0.375 0.000
H8 -0.049 2.089 0.000
N9 0.000 1.085 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.07622.74542.24224.30893.26923.25962.54252.1284
C21.07622.20031.37613.25882.20382.25092.12431.3534
H32.74542.20031.07532.74582.24023.30254.18753.2301
C42.24221.37611.07532.24521.40982.26673.16542.1836
H54.30893.25882.74582.24521.07762.08254.03023.1346
C63.26922.20382.24021.40981.07761.32683.05862.1103
N73.25962.25093.30252.26672.08251.32682.03281.3451
H82.54252.12434.18753.16544.03023.05862.03281.0049
N92.12841.35343.23012.18363.13462.11031.34511.0049

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 131.835 H1 C2 N9 121.912
C2 C4 H3 127.249 C2 C4 C6 104.558
C2 N9 N7 113.045 C2 N9 H8 127.902
H3 C4 C6 128.193 C4 C2 N9 106.253
C4 C6 H5 128.521 C4 C6 N7 111.811
H5 C6 N7 119.668 C6 N7 N9 104.334
N7 N9 H8 119.053
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.180      
2 C 0.239      
3 H 0.166      
4 C -0.053      
5 H 0.167      
6 C 0.162      
7 N -0.624      
8 H 0.204      
9 N -0.442      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.153 0.788 0.000 2.293
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.250 0.161 0.000
y 0.161 8.241 0.000
z 0.000 0.000 5.019


<r2> (average value of r2) Å2
<r2> 80.140
(<r2>)1/2 8.952