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All results from a given calculation for C4H7NO (2-Pyrrolidinone)

using model chemistry: QCISD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-285.828939
Energy at 298.15K 
HF Energy-284.890883
Nuclear repulsion energy239.561095
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/6-31G**
Rotational Constants (cm-1) from geometry optimized at QCISD/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.080 -1.096 -0.095
C2 0.902 0.002 -0.009
C3 -0.010 1.218 0.148
C4 -1.406 0.689 -0.206
C5 -1.326 -0.807 0.150
O6 2.123 -0.012 -0.038
H7 0.479 -2.016 -0.013
H8 0.048 1.542 1.191
H9 0.335 2.039 -0.476
H10 -2.212 1.196 0.323
H11 -1.582 0.794 -1.277
H12 -1.601 -0.982 1.197
H13 -1.971 -1.422 -0.478

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13
N11.37412.32812.32471.45572.31401.00632.93443.16863.26762.78062.12262.1118
C21.37411.52832.41572.37551.22192.06142.13062.16583.35162.89942.94723.2408
C32.32811.52831.53372.41512.46983.27441.09321.08822.20912.16392.91033.3477
C42.32472.41571.53371.54023.60183.30232.18902.21971.08921.09122.19052.2025
C51.45572.37552.41511.54023.54492.17832.91383.35492.19702.16061.09611.0904
O62.31401.22192.46983.60183.54492.59232.86902.75624.51523.98934.04204.3530
H71.00632.06143.27443.30232.17832.59233.78034.08414.20343.70722.61872.5639
H82.93442.13061.09322.18902.91382.86903.78031.76302.44643.05113.01523.9558
H93.16862.16581.08822.21973.35492.75624.08411.76302.80012.42263.95954.1596
H103.26763.35162.20911.08922.19704.51524.20342.44642.80011.76582.42502.7478
H112.78062.89942.16391.09122.16063.98933.70723.05112.42261.76583.04582.3879
H122.12262.94722.91032.19051.09614.04202.61873.01523.95952.42503.04581.7707
H132.11183.24083.34772.20251.09044.35302.56393.95584.15962.74782.38791.7707

picture of 2-Pyrrolidinone state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 C2 C3 106.553 N1 C2 O6 125.992
N1 C5 C4 101.746 N1 C5 H12 111.800
N1 C5 H13 111.273 C2 N1 C5 114.142
C2 N1 H7 119.188 C2 C3 C4 104.175
C2 C3 H8 107.572 C2 C3 H9 110.618
C3 C2 O6 127.450 C3 C4 C5 103.567
C3 C4 H10 113.678 C3 C4 H11 109.913
C4 C3 H8 111.785 C4 C3 H9 114.632
C4 C5 H12 111.266 C4 C5 H13 112.578
C5 N1 H7 123.416 C5 C4 H10 112.207
C5 C4 H11 109.205 H8 C3 H9 107.843
H10 C4 H11 108.169 H12 C5 H13 108.156
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability