return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C5H5NO (2-Pyridinol)

using model chemistry: HF/3-21G

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/3-21G
 hartrees
Energy at 0K-319.768150
Energy at 298.15K-319.775380
Nuclear repulsion energy277.102058
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/3-21G
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' 3893 3526 104.50      
2 A' 3425 3101 0.27      
3 A' 3407 3085 13.23      
4 A' 3382 3063 16.00      
5 A' 3372 3053 3.09      
6 A' 1774 1607 107.39      
7 A' 1747 1582 93.74      
8 A' 1653 1497 139.71      
9 A' 1626 1472 30.63      
10 A' 1507 1365 6.98      
11 A' 1438 1302 45.52      
12 A' 1341 1214 68.08      
13 A' 1303 1180 140.72      
14 A' 1228 1112 14.91      
15 A' 1191 1079 108.50      
16 A' 1131 1024 7.88      
17 A' 1090 987 10.00      
18 A' 922 835 20.52      
19 A' 713 645 4.59      
20 A' 621 563 0.89      
21 A' 437 396 20.71      
22 A" 1199 1086 2.22      
23 A" 1161 1051 1.67      
24 A" 1041 943 11.21      
25 A" 927 839 118.84      
26 A" 872 790 7.67      
27 A" 619 560 7.21      
28 A" 516 468 186.56      
29 A" 486 440 15.43      
30 A" 259 235 0.77      

Unscaled Zero Point Vibrational Energy (zpe) 22138.8 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 20048.9 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 HF/3-21G
ABC
0.19908 0.09244 0.06313

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 -1.159 0.285 0.000
C2 0.000 0.899 0.000
C3 1.215 0.224 0.000
C4 1.181 -1.149 0.000
C5 -0.045 -1.813 0.000
C6 -1.188 -1.051 0.000
O7 0.007 2.257 0.000
H8 2.127 0.781 0.000
H9 2.096 -1.706 0.000
H10 -0.097 -2.881 0.000
H11 -2.157 -1.504 0.000
H12 -0.898 2.596 0.000

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 C6 O7 H8 H9 H10 H11 H12
N11.31112.37492.74432.37561.33702.29023.32243.81583.33942.04942.3255
C21.31111.39002.36382.71202.28371.35762.12983.34383.78103.22951.9203
C32.37491.39001.37352.39542.72122.36411.06772.12213.37133.79003.1769
C42.74432.36381.37351.39412.37143.60182.14891.07152.15293.35744.2833
C52.37562.71202.39541.39411.37394.06963.38262.14321.06942.13524.4908
C61.33702.28372.72122.37141.37393.51723.78763.34892.13011.06983.6591
O72.29021.35762.36413.60184.06963.51722.58234.47975.13844.33920.9670
H83.32242.12981.06772.14893.38263.78762.58232.48774.28434.85543.5274
H93.81583.34382.12211.07152.14323.34894.47972.48772.48794.25825.2419
H103.33943.78103.37132.15291.06942.13015.13844.28432.48792.47785.5353
H112.04943.22953.79003.35742.13521.06984.33924.85544.25822.47784.2895
H122.32551.92033.17694.28334.49083.65910.96703.52745.24195.53534.2895

picture of 2-Pyridinol state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 123.073 N1 C2 O7 118.206
N1 C6 C5 122.390 N1 C6 H11 116.312
C2 N1 C6 119.165 C2 C3 C4 117.596
C2 C3 H8 119.547 C2 O7 H12 110.262
C3 C2 O7 118.721 C3 C4 C5 119.880
C3 C4 H9 119.941 C4 C3 H8 122.857
C4 C5 C6 117.895 C4 C5 H10 121.270
C5 C4 H9 120.179 C5 C6 H11 121.298
C6 C5 H10 120.835
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.777      
2 C 0.775      
3 C -0.333      
4 C -0.160      
5 C -0.359      
6 C 0.141      
7 O -0.731      
8 H 0.269      
9 H 0.260      
10 H 0.247      
11 H 0.260      
12 H 0.409      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.311 -1.652 0.000 1.681
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.416 -2.665 0.000
y -2.665 -36.682 0.000
z 0.000 0.000 -43.704
Traceless
 xyz
x 2.777 -2.665 0.000
y -2.665 3.878 0.000
z 0.000 0.000 -6.655
Polar
3z2-r2-13.310
x2-y2-0.734
xy-2.665
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.672 0.082 0.000
y 0.082 9.905 0.000
z 0.000 0.000 2.191


<r2> (average value of r2) Å2
<r2> 175.571
(<r2>)1/2 13.250