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All results from a given calculation for C3H3NO (Oxazole)

using model chemistry: QCISD(T)/cc-pVDZ

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(T)/cc-pVDZ
 hartrees
Energy at 0K-245.438286
Energy at 298.15K-245.442863
HF Energy-244.647610
Nuclear repulsion energy161.683064
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(T)/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 A' 3313 3157        
2 A' 3291 3137        
3 A' 3276 3122        
4 A' 1576 1502        
5 A' 1543 1471        
6 A' 1352 1289        
7 A' 1265 1205        
8 A' 1168 1113        
9 A' 1115 1063        
10 A' 1098 1046        
11 A' 1069 1019        
12 A' 913 871        
13 A' 903 861        
14 A" 848 808        
15 A" 831 792        
16 A" 748 713        
17 A" 651 621        
18 A" 612 583        

Unscaled Zero Point Vibrational Energy (zpe) 12786.5 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 12186.8 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(T)/cc-pVDZ
ABC
0.33249 0.31445 0.16161

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 -1.114 0.314 0.000
C2 0.000 1.103 0.000
N3 1.142 0.469 0.000
C4 0.761 -0.885 0.000
C5 -0.608 -0.968 0.000
H6 -0.168 2.181 0.000
H7 1.496 -1.692 0.000
H8 -1.333 -1.780 0.000

Atom - Atom Distances (Å)
  O1 C2 N3 C4 C5 H6 H7 H8
O11.36452.26152.22551.37842.09263.29142.1056
C21.36451.30642.12862.15781.09103.16963.1760
N32.26151.30641.40712.26442.15552.18963.3447
C42.22552.12861.40711.37083.20361.09112.2772
C51.37842.15782.26441.37083.17922.22431.0891
H62.09261.09102.15553.20363.17924.21474.1286
H73.29143.16962.18961.09112.22434.21472.8304
H82.10563.17603.34472.27721.08914.12862.8304

picture of Oxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O1 C2 N3 115.692 O1 C2 H6 116.461
O1 C5 C4 108.093 O1 C5 H8 116.662
C2 O1 C5 103.751 C2 N3 C4 103.274
N3 C2 H6 127.848 N3 C4 C5 109.191
N3 C4 H7 121.923 C4 C5 H8 135.246
C5 C4 H7 128.886
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability