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 C4H5N (Pyrrole)

using model chemistry: BLYP/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at BLYP/TZVP
 hartrees
Energy at 0K-210.155170
Energy at 298.15K 
HF Energy-210.155170
Nuclear repulsion energy159.865271
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 BLYP/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 A1 3563 3555 51.23      
2 A1 3195 3187 0.01      
3 A1 3174 3166 4.49      
4 A1 1447 1444 7.29      
5 A1 1367 1364 3.69      
6 A1 1134 1131 1.34      
7 A1 1064 1061 5.96      
8 A1 1004 1001 33.88      
9 A1 879 877 0.26      
10 A2 839 837 0.00      
11 A2 642 641 0.00      
12 A2 610 608 0.00      
13 B1 778 776 4.95      
14 B1 690 689 157.13      
15 B1 619 617 0.11      
16 B1 446 444 63.47      
17 B2 3190 3182 3.73      
18 B2 3163 3155 3.05      
19 B2 1521 1517 2.58      
20 B2 1390 1387 7.20      
21 B2 1276 1272 0.55      
22 B2 1127 1124 1.40      
23 B2 1036 1033 29.95      
24 B2 859 857 1.26      

Unscaled Zero Point Vibrational Energy (zpe) 17505.5 cm-1
Scaled (by 0.9975) Zero Point Vibrational Energy (zpe) 17461.7 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 BLYP/TZVP
ABC
0.30119 0.29722 0.14960

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.129
H2 0.000 0.000 2.142
C3 0.000 1.134 0.333
C4 0.000 -1.134 0.333
C5 0.000 0.715 -0.988
C6 0.000 -0.715 -0.988
H7 0.000 2.125 0.768
H8 0.000 -2.125 0.768
H9 0.000 1.364 -1.857
H10 0.000 -1.364 -1.857

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01261.38551.38552.23502.23502.15552.15553.28283.2828
H21.01262.13492.13493.21083.21082.53032.53034.22494.2249
C31.38552.13492.26731.38572.27231.08283.28772.20173.3213
C41.38552.13492.26732.27231.38573.28771.08283.32132.2017
C52.23503.21081.38572.27231.43042.25243.33951.08402.2530
C62.23503.21082.27231.38571.43043.33952.25242.25301.0840
H72.15552.53031.08283.28772.25243.33954.25012.73344.3661
H82.15552.53033.28771.08283.33952.25244.25014.36612.7334
H93.28284.22492.20173.32131.08402.25302.73344.36612.7273
H103.28284.22493.32132.20172.25301.08404.36612.73342.7273

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.513 N1 C3 H7 121.193
N1 C4 C6 107.513 N1 C4 H8 121.193
H2 N1 C3 125.089 H2 N1 C4 125.089
C3 N1 C4 109.821 C3 C5 C6 107.577
C3 C5 H9 125.681 C4 C6 C5 107.577
C4 C6 H10 125.681 C5 C3 H7 131.294
C5 C6 H10 126.742 C6 C4 H8 131.294
C6 C5 H9 126.742
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.173      
2 H 0.230      
3 C -0.113      
4 C -0.113      
5 C -0.127      
6 C -0.127      
7 H 0.105      
8 H 0.105      
9 H 0.107      
10 H 0.107      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 1.912 1.912
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.364 0.000 0.000
y 0.000 -27.465 0.000
z 0.000 0.000 -24.172
Traceless
 xyz
x -8.546 0.000 0.000
y 0.000 1.803 0.000
z 0.000 0.000 6.742
Polar
3z2-r213.485
x2-y2-6.899
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.776 0.000 0.000
y 0.000 8.965 0.000
z 0.000 0.000 8.667


<r2> (average value of r2) Å2
<r2> 86.855
(<r2>)1/2 9.320