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 C4H5N (Cyclopropanecarbonitrile)

using model chemistry: QCISD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/3-21G
 hartrees
Energy at 0K-208.121537
Energy at 298.15K-208.126901
HF Energy-207.617434
Nuclear repulsion energy146.062855
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/3-21G
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' 3254 3154 5.36      
2 A' 3194 3096 0.38      
3 A' 3161 3063 2.31      
4 A' 2293 2223 4.75      
5 A' 1547 1500 0.74      
6 A' 1402 1359 0.38      
7 A' 1174 1137 2.26      
8 A' 1159 1124 3.28      
9 A' 1134 1099 9.52      
10 A' 922 894 15.05      
11 A' 827 801 0.64      
12 A' 751 728 5.82      
13 A' 545 528 1.87      
14 A' 232 224 2.47      
15 A" 3239 3139 0.14      
16 A" 3154 3057 6.94      
17 A" 1532 1485 4.49      
18 A" 1228 1190 0.84      
19 A" 1170 1134 0.10      
20 A" 1150 1115 12.70      
21 A" 938 909 0.48      
22 A" 817 792 9.77      
23 A" 583 565 0.32      
24 A" 235 228 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 17819.5 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 17270.6 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/3-21G
ABC
0.51248 0.11302 0.10706

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -1.820 0.997 1.279
H2 -1.820 0.997 -1.279
H3 -1.241 -0.747 -1.274
H4 -1.241 -0.747 1.274
H5 0.250 1.697 0.000
C6 0.000 0.639 0.000
N7 2.049 -0.999 0.000
C8 1.134 -0.263 0.000
C9 -1.273 0.212 0.764
C10 -1.273 0.212 -0.764

Atom - Atom Distances (Å)
  H1 H2 H3 H4 H5 C6 N7 C8 C9 C10
H12.55753.14561.83762.53192.25284.53733.45641.08652.2563
H22.55751.83763.14562.53192.25284.53733.45642.25631.0865
H33.14561.83762.54873.13332.25483.53662.73772.25321.0863
H41.83763.14562.54873.13332.25483.53662.73771.08632.2532
H52.53192.53193.13333.13331.08673.24062.14962.26032.2603
C62.25282.25282.25482.25481.08672.62331.44901.54491.5449
N74.53734.53733.53663.53663.24062.62331.17433.61713.6171
C83.45643.45642.73772.73772.14961.44901.17432.56922.5692
C91.08652.25632.25321.08632.26031.54493.61712.56921.5290
C102.25631.08651.08632.25322.26031.54493.61712.56921.5290

picture of Cyclopropanecarbonitrile state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 C9 H4 115.500 H1 C9 C6 116.690
H1 C9 C10 118.250 H2 C10 H3 115.500
H2 C10 C6 116.690 H2 C10 C9 118.250
H3 C10 C6 116.875 H3 C10 C9 117.995
H4 C9 C6 116.875 H4 C9 C10 117.995
H5 C6 C8 115.194 H5 C6 C9 117.325
H5 C6 C10 117.325 C6 C8 N7 179.713
C6 C9 C10 60.341 C6 C10 C9 60.341
C8 C6 C9 118.181 C8 C6 C10 118.181
C9 C6 C10 59.317
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability