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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-225.929930
Energy at 298.15K-225.935766
HF Energy-225.929930
Nuclear repulsion energy161.998080
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 PBEPBEultrafine/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' 3579 3520 54.16      
2 A' 3223 3170 1.45      
3 A' 3204 3151 3.33      
4 A' 3191 3138 4.59      
5 A' 1534 1509 5.43      
6 A' 1460 1436 5.34      
7 A' 1412 1389 10.42      
8 A' 1350 1328 3.32      
9 A' 1254 1234 3.41      
10 A' 1161 1141 0.72      
11 A' 1133 1114 14.31      
12 A' 1039 1021 10.91      
13 A' 1030 1013 31.49      
14 A' 912 897 5.09      
15 A' 890 875 8.07      
16 A" 844 830 5.74      
17 A" 790 777 18.19      
18 A" 716 705 68.46      
19 A" 676 665 21.77      
20 A" 618 608 0.09      
21 A" 485 477 52.75      

Unscaled Zero Point Vibrational Energy (zpe) 15249.6 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 14997.9 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 PBEPBEultrafine/6-31G*
ABC
0.31871 0.30989 0.15712

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 2.122 0.731 0.000
C2 1.118 0.306 0.000
H3 1.272 -1.914 0.000
C4 0.669 -1.008 0.000
H5 -1.494 -1.691 0.000
C6 -0.752 -0.891 0.000
N7 -1.151 0.384 0.000
H8 -0.048 2.105 0.000
N9 0.000 1.091 0.000

Atom - Atom Distances (Å)
  H1 C2 H3 C4 H5 C6 N7 H8 N9
H11.08962.77812.26584.35133.29953.29122.56822.1518
C21.08962.22541.38873.28762.22022.27092.14421.3659
H32.77812.22541.08822.77442.26793.33994.23063.2627
C42.26581.38871.08822.26781.42582.29193.19492.2027
H54.35133.28762.77442.26781.09092.10314.06223.1570
C63.29952.22022.26791.42581.09091.33613.07772.1191
N73.29122.27093.33992.29192.10311.33612.04451.3507
H82.56822.14424.23063.19494.06223.07772.04451.0160
N92.15181.36593.26272.20273.15702.11911.35071.0160

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 131.819 H1 C2 N9 121.997
C2 C4 H3 127.493 C2 C4 C6 104.148
C2 N9 N7 113.423 C2 N9 H8 127.755
H3 C4 C6 128.360 C4 C2 N9 106.185
C4 C6 H5 128.104 C4 C6 N7 112.116
H5 C6 N7 119.780 C6 N7 N9 104.128
N7 N9 H8 118.822
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.163      
2 C 0.063      
3 H 0.143      
4 C -0.237      
5 H 0.148      
6 C 0.024      
7 N -0.264      
8 H 0.345      
9 N -0.384      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.032 0.955 0.000 2.245
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.184 2.341 -0.002
y 2.341 -21.717 -0.034
z -0.002 -0.034 -31.290
Traceless
 xyz
x -2.681 2.341 -0.002
y 2.341 8.520 -0.034
z -0.002 -0.034 -5.840
Polar
3z2-r2-11.680
x2-y2-7.467
xy2.341
xz-0.002
yz-0.034


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.079 0.280 -0.000
y 0.280 7.231 -0.003
z -0.000 -0.003 2.573


<r2> (average value of r2) Å2
<r2> 80.615
(<r2>)1/2 8.979