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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: MP2=FULL/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/3-21G*
 hartrees
Energy at 0K-208.112459
Energy at 298.15K 
HF Energy-207.643489
Nuclear repulsion energy158.973380
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=FULL/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3613 3425 71.54      
2 A1 3309 3137 0.06      
3 A1 3283 3112 3.76      
4 A1 1482 1405 2.39      
5 A1 1394 1321 10.77      
6 A1 1158 1098 0.18      
7 A1 1101 1044 7.46      
8 A1 1032 978 24.85      
9 A1 928 880 0.54      
10 A2 804 762 0.00      
11 A2 678 642 0.00      
12 A2 626 594 0.00      
13 B1 802 760 6.20      
14 B1 722 685 150.87      
15 B1 647 613 0.28      
16 B1 565 535 116.76      
17 B2 3298 3127 4.26      
18 B2 3273 3102 1.31      
19 B2 1556 1475 10.95      
20 B2 1438 1363 14.73      
21 B2 1343 1273 0.54      
22 B2 1185 1124 0.01      
23 B2 1064 1009 20.42      
24 B2 914 867 0.73      

Unscaled Zero Point Vibrational Energy (zpe) 18107.2 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 17165.7 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 MP2=FULL/3-21G*
ABC
0.29731 0.29387 0.14779

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.140
H2 0.000 0.000 2.152
C3 0.000 1.143 0.333
C4 0.000 -1.143 0.333
C5 0.000 0.720 -0.993
C6 0.000 -0.720 -0.993
H7 0.000 2.134 0.758
H8 0.000 -2.134 0.758
H9 0.000 1.363 -1.861
H10 0.000 -1.363 -1.861

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01211.39921.39922.25202.25202.16842.16843.29633.2963
H21.01212.14872.14873.22733.22732.54982.54984.23864.2386
C31.39922.14872.28541.39202.28661.07893.30452.20493.3301
C41.39922.14872.28542.28661.39203.30451.07893.33012.2049
C52.25203.22731.39202.28661.43992.25103.34861.07972.2560
C62.25203.22732.28661.39201.43993.34862.25102.25601.0797
H72.16842.54981.07893.30452.25103.34864.26882.73004.3688
H82.16842.54983.30451.07893.34862.25104.26884.36882.7300
H93.29634.23862.20493.33011.07972.25602.73004.36882.7252
H103.29634.23863.33012.20492.25601.07974.36882.73002.7252

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.571 N1 C3 H7 121.563
N1 C4 C6 107.571 N1 C4 H8 121.563
H2 N1 C3 125.250 H2 N1 C4 125.250
C3 N1 C4 109.500 C3 C5 C6 107.679
C3 C5 H9 125.791 C4 C6 C5 107.679
C4 C6 H10 125.791 C5 C3 H7 130.867
C5 C6 H10 126.530 C6 C4 H8 130.867
C6 C5 H9 126.530
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability