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 C5H7N (1H-Pyrrole, 1-methyl-)

using model chemistry: MP2/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-41.545680
Energy at 298.15K-41.553509
HF Energy-41.048919
Nuclear repulsion energy114.242341
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 MP2/CEP-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 3263 3153 2.45      
2 A 3249 3139 22.57      
3 A 3231 3122 12.27      
4 A 3211 3103 1.40      
5 A 3173 3066 26.71      
6 A 3147 3041 45.84      
7 A 3043 2941 77.97      
8 A 1542 1490 9.27      
9 A 1529 1477 16.93      
10 A 1511 1460 18.77      
11 A 1499 1449 0.55      
12 A 1468 1419 29.31      
13 A 1408 1361 1.76      
14 A 1401 1353 2.57      
15 A 1291 1247 0.04      
16 A 1288 1245 50.85      
17 A 1161 1122 5.88      
18 A 1116 1078 12.57      
19 A 1112 1075 14.39      
20 A 1071 1035 11.51      
21 A 1056 1020 11.56      
22 A 957 925 7.05      
23 A 874 844 0.01      
24 A 777 750 0.08      
25 A 755 730 16.59      
26 A 701 678 195.21      
27 A 651 629 4.13      
28 A 641 620 0.01      
29 A 597 577 0.00      
30 A 596 576 3.76      
31 A 351 339 0.85      
32 A 199 192 6.29      
33 A 82 80 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 23974.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 23166.9 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 MP2/CEP-31G
ABC
0.27346 0.11194 0.08070

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-31G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -2.134 -0.000 0.022
H2 -2.514 0.902 -0.495
H3 -2.514 -0.901 -0.497
H4 -2.496 -0.001 1.071
C5 1.540 -0.732 0.013
H6 2.414 -1.392 0.017
C7 1.540 0.732 0.013
H8 2.414 1.392 0.017
C9 0.173 1.158 -0.012
H10 -0.273 2.157 -0.023
C11 0.173 -1.158 -0.012
H12 -0.273 -2.157 -0.023
N13 -0.644 0.000 -0.031

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 C7 H8 C9 H10 C11 H12 N13
C11.10681.10681.10973.74704.75643.74704.75652.58132.84952.58132.84941.4912
H21.10681.80261.80804.40105.45984.08984.97902.74192.61193.41973.82132.1274
H31.10681.80261.80814.09024.97944.40105.45973.41953.82102.74242.61262.1276
H41.10971.80801.80814.23605.21054.23635.21093.10383.28523.10323.28412.1548
C53.74704.40104.09024.23601.09441.46492.29662.33333.41181.43262.30662.3044
H64.75645.45984.97945.21051.09442.29672.78303.39474.45162.25382.79453.3602
C73.74704.08984.40104.23631.46492.29671.09441.43262.30652.33333.41182.3044
H84.75654.97905.45975.21092.29662.78301.09442.25382.79453.39474.45153.3601
C92.58132.74193.41953.10382.33333.39471.43262.25381.09442.31553.34481.4169
H102.84952.61193.82103.28523.41184.45162.30652.79451.09443.34484.31442.1889
C112.58133.41972.74243.10321.43262.25382.33333.39472.31553.34481.09441.4169
H122.84943.82132.61263.28412.30662.79453.41184.45153.34484.31441.09442.1889
N131.49122.12742.12762.15482.30443.36022.30443.36011.41692.18891.41692.1889

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 125.135 C1 N13 C11 125.131
H2 C1 H3 109.041 H2 C1 H4 109.312
H2 C1 N13 109.047 H3 C1 H4 109.315
H3 C1 N13 109.056 H4 C1 N13 111.040
C5 C7 H8 127.028 C5 C7 C9 107.269
C5 C11 H12 131.312 C5 C11 N13 107.935
H6 C5 C7 127.029 H6 C5 C11 125.697
C7 C5 C11 107.269 C7 C9 H10 131.310
C7 C9 N13 107.936 H8 C7 C9 125.698
C9 N13 C11 109.591 H10 C9 N13 120.754
H12 C11 N13 120.752
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability