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

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 C1 1A
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-285.840525
Energy at 298.15K 
HF Energy-284.899783
Nuclear repulsion energy238.739236
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
Rotational Constants (cm-1) from geometry optimized at QCISD/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.081 -1.099 -0.125
C2 0.906 0.004 -0.013
C3 -0.015 1.223 0.146
C4 -1.413 0.685 -0.210
C5 -1.319 -0.810 0.168
O6 2.124 -0.008 -0.028
H7 0.487 -2.020 0.008
H8 0.043 1.542 1.204
H9 0.332 2.062 -0.478
H10 -2.237 1.200 0.310
H11 -1.581 0.771 -1.299
H12 -1.561 -0.966 1.241
H13 -1.995 -1.443 -0.431

Atom - Atom Distances (Å)
  N1 C2 C3 C4 C5 O6 H7 H8 H9 H10 H11 H12 H13
N11.38242.34052.32841.45922.31771.01502.95753.19083.29382.76392.13982.1264
C21.38241.53622.42422.37601.21792.06732.14312.18603.37822.90272.93253.2688
C32.34051.53621.53922.41562.47443.28501.10691.10132.22802.17812.89543.3709
C42.32842.42421.53921.54523.60823.31262.20312.23861.10241.10502.20332.2173
C51.45922.37602.41561.54523.54002.17982.90873.37522.21452.17311.11041.1035
O62.31771.21792.47443.60823.54002.59322.87282.77474.53763.99364.01274.3800
H71.01502.06733.28503.31262.17982.59323.78404.11364.22863.71162.61242.5860
H82.95752.14311.10692.20312.90872.87283.78401.78432.47293.08182.97773.9674
H93.19082.18601.10132.23863.37522.77474.11361.78432.82212.44963.96344.2074
H103.29383.37822.22801.10242.21454.53764.22862.47292.82211.78932.45312.7556
H112.76392.90272.17811.10502.17313.99363.71163.08182.44961.78933.07732.4138
H122.13982.93252.89542.20331.11044.01272.61242.97773.96342.45313.07731.7922
H132.12643.26883.37092.21731.10354.38002.58603.96744.20742.75562.41381.7922

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 106.510 N1 C2 O6 125.960
N1 C5 C4 101.577 N1 C5 H12 112.052
N1 C5 H13 111.398 C2 N1 C5 113.448
C2 N1 H7 118.340 C2 C3 C4 104.047
C2 C3 H8 107.237 C2 C3 H9 110.876
C3 C2 O6 127.527 C3 C4 C5 103.104
C3 C4 H10 113.982 C3 C4 H11 109.826
C4 C3 H8 111.685 C4 C3 H9 114.936
C4 C5 H12 111.081 C4 C5 H13 112.617
C5 N1 H7 122.507 C5 C4 H10 112.448
C5 C4 H11 109.036 H8 C3 H9 107.808
H10 C4 H11 108.302 H12 C5 H13 108.099
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability