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All results from a given calculation for C4H5N (Pyrrole)

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-209.556746
Energy at 298.15K 
HF Energy-208.826439
Nuclear repulsion energy159.805183
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 QCISD/cc-pVDZ
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 3714 3563 73.88      
2 A1 3300 3166 0.22      
3 A1 3277 3144 3.63      
4 A1 1532 1470 10.86      
5 A1 1449 1391 3.27      
6 A1 1184 1136 3.98      
7 A1 1097 1053 10.44      
8 A1 1036 994 24.45      
9 A1 892 856 0.14      
10 A2 857 822 0.00      
11 A2 701 673 0.00      
12 A2 613 588 0.00      
13 B1 833 800 1.05      
14 B1 738 708 128.37      
15 B1 637 611 0.26      
16 B1 434 417 71.29      
17 B2 3292 3159 4.86      
18 B2 3265 3132 2.60      
19 B2 1602 1537 2.80      
20 B2 1500 1439 7.94      
21 B2 1312 1259 1.57      
22 B2 1165 1118 1.73      
23 B2 1072 1028 18.92      
24 B2 871 835 1.30      

Unscaled Zero Point Vibrational Energy (zpe) 18186.3 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 17447.9 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 QCISD/cc-pVDZ
ABC
0.30136 0.29671 0.14951

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 1.128
H2 0.000 0.000 2.138
C3 0.000 1.129 0.335
C4 0.000 -1.129 0.335
C5 0.000 0.719 -0.990
C6 0.000 -0.719 -0.990
H7 0.000 2.126 0.775
H8 0.000 -2.126 0.775
H9 0.000 1.376 -1.861
H10 0.000 -1.376 -1.861

Atom - Atom Distances (Å)
  N1 H2 C3 C4 C5 C6 H7 H8 H9 H10
N11.01091.37951.37952.23622.23622.15542.15543.28993.2899
H21.01092.12772.12773.20993.20992.52582.52584.22934.2293
C31.37952.12772.25841.38702.27401.09003.28522.20963.3313
C41.37952.12772.25842.27401.38703.28521.09003.33132.2096
C52.23623.20991.38702.27401.43802.25753.34841.09092.2688
C62.23623.20992.27401.38701.43803.34842.25752.26881.0909
H72.15542.52581.09003.28522.25753.34844.25282.74074.3835
H82.15542.52583.28521.09003.34842.25754.25284.38352.7407
H93.28994.22932.20963.33131.09092.26882.74074.38352.7520
H103.28994.22933.33132.20962.26881.09094.38352.74072.7520

picture of Pyrrole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C3 C5 107.861 N1 C3 H7 121.119
N1 C4 C6 107.861 N1 C4 H8 121.119
H2 N1 C3 125.063 H2 N1 C4 125.063
C3 N1 C4 109.874 C3 C5 C6 107.202
C3 C5 H9 125.765 C4 C6 C5 107.202
C4 C6 H10 125.765 C5 C3 H7 131.021
C5 C6 H10 127.032 C6 C4 H8 131.021
C6 C5 H9 127.032
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability