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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (1H-Pyrrole, 1-methyl-)

using model chemistry: PM6

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
Energy calculated at PM6
 hartrees
Energy at 0K 
Energy at 298.15K0.039948
Nuclear repulsion energy134.607401
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 PM6
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 2806 2982 57.56      
2 A 2795 2969 107.65      
3 A 2790 2964 124.92      
4 A 2786 2960 166.96      
5 A 2762 2935 39.84      
6 A 2671 2837 61.89      
7 A 2662 2828 73.98      
8 A 1545 1641 2.31      
9 A 1516 1611 20.00      
10 A 1445 1535 0.03      
11 A 1435 1525 8.24      
12 A 1357 1442 17.28      
13 A 1341 1425 34.31      
14 A 1240 1318 2.75      
15 A 1238 1316 32.55      
16 A 1237 1314 38.90      
17 A 1150 1222 4.87      
18 A 1139 1210 7.85      
19 A 1115 1184 26.92      
20 A 1057 1123 16.54      
21 A 1051 1117 4.53      
22 A 1002 1064 29.83      
23 A 909 966 0.00      
24 A 868 922 0.17      
25 A 842 894 0.02      
26 A 798 848 134.90      
27 A 791 840 0.09      
28 A 668 710 3.86      
29 A 513 544 0.00      
30 A 468 497 2.97      
31 A 356 378 0.68      
32 A 192 204 3.34      
33 A 14i 15i 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 22264.9 cm-1
Scaled (by 1.0624) Zero Point Vibrational Energy (zpe) 23654.2 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 PM6
ABC
0.28383 0.11610 0.08372

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM6

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.049 0.001 0.002
H2 -2.437 1.007 -0.198
H3 -2.433 -0.673 -0.776
H4 -2.431 -0.335 0.972
C5 1.480 -0.691 -0.001
H6 2.297 -1.297 0.001
C7 1.484 0.688 0.001
H8 2.300 1.291 0.003
C9 0.158 1.097 -0.000
H10 -0.164 2.061 -0.002
C11 0.156 -1.097 0.001
H12 -0.175 -2.059 -0.002
N13 -0.619 0.002 -0.001

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 H10 C11 H12 N13
C11.09701.09881.09553.59604.53523.59864.53612.46432.79182.46272.78521.4294
H21.09701.77751.78064.27375.26833.93854.74952.60432.51243.34503.81592.0864
H31.09881.77751.78083.98884.83314.21835.18313.23283.63622.73542.76022.0842
H41.09551.78061.78084.04584.92124.16085.09523.11433.43862.86583.00202.0837
C53.59604.27373.98884.04581.01701.37862.14472.22333.20581.38572.14772.2107
H64.53525.26834.83314.92121.01702.14492.58803.20994.16342.15052.58653.1922
C73.59863.93854.21834.16081.37862.14491.01501.38702.14532.22513.20922.2122
H84.53614.74955.18315.09522.14472.58801.01502.15032.58193.20994.16553.1915
C92.46432.60433.23283.11432.22333.20991.38702.15031.01662.19443.17411.3435
H102.79182.51243.63623.43863.20584.16342.14532.58191.01663.17464.12062.1091
C112.46273.34502.73542.86581.38572.15052.22513.20992.19443.17461.01731.3446
H122.78523.81592.76023.00202.14772.58653.20924.16553.17414.12061.01732.1085
N131.42942.08642.08422.08372.21073.19222.21223.19151.34352.10911.34462.1085

picture of 1H-Pyrrole, 1-methyl- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 N13 C9 125.397 C1 N13 C11 125.165
H2 C1 H3 108.094 H2 C1 H4 108.614
H2 C1 N13 110.669 H3 C1 H4 108.490
H3 C1 N13 110.370 H4 C1 N13 110.530
C5 C7 H8 126.613 C5 C7 C9 107.011
C5 C11 H12 126.012 C5 C11 N13 108.123
H6 C5 C7 126.441 H6 C5 C11 126.345
C7 C5 C11 107.214 C7 C9 H10 125.677
C7 C9 N13 108.215 H8 C7 C9 126.376
C9 N13 C11 109.438 H10 C9 N13 126.108
H12 C11 N13 125.864
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PM6 Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.330      
2 H 0.165      
3 H 0.163      
4 H 0.162      
5 C -0.211      
6 H 0.154      
7 C -0.213      
8 H 0.154      
9 C -0.165      
10 H 0.159      
11 C -0.168      
12 H 0.160      
13 N -0.030      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -3.006 0.016 0.002 3.006
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 9.320 0.044 -0.012
y 0.044 7.897 0.000
z -0.012 0.000 2.185


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000