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All results from a given calculation for C3H3NO (Isoxazole)

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-245.593485
Energy at 298.15K 
HF Energy-244.674454
Nuclear repulsion energy162.404069
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-pVTZ
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' 3321 3173 0.15      
2 A' 3294 3147 0.10      
3 A' 3277 3131 1.25      
4 A' 1636 1563 10.82      
5 A' 1504 1437 33.97      
6 A' 1422 1359 10.45      
7 A' 1271 1214 6.90      
8 A' 1179 1127 22.48      
9 A' 1133 1083 8.71      
10 A' 1053 1006 4.22      
11 A' 943 901 19.62      
12 A' 923 882 0.36      
13 A' 918 878 19.14      
14 A" 934 893 6.03      
15 A" 906 866 0.01      
16 A" 797 762 57.11      
17 A" 650 621 2.89      
18 A" 608 580 14.12      

Unscaled Zero Point Vibrational Energy (zpe) 12884.3 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 12311.0 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-pVTZ
ABC
0.32920 0.32185 0.16274

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.126 0.372 0.000
C2 0.615 -0.960 0.000
C3 0.000 1.121 0.000
N4 -0.690 -0.988 0.000
O5 -1.092 0.342 0.000
H6 2.147 0.701 0.000
H7 1.154 -1.892 0.000
H8 -0.180 2.181 0.000

Atom - Atom Distances (Å)
  C1 C2 C3 N4 O5 H6 H7 H8
C11.42641.35262.26832.21801.07332.26352.2319
C21.42642.17011.30452.14632.26011.07683.2404
C31.35262.17012.21931.34172.18823.22661.0753
N42.26831.30452.21931.38933.30182.05363.2102
O52.21802.14631.34171.38933.25933.16772.0532
H61.07332.26012.18823.30183.25932.77612.7587
H72.26351.07683.22662.05363.16772.77614.2862
H82.23193.24041.07533.21022.05322.75874.2862

picture of Isoxazole state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N4 112.242 C1 C2 H7 128.902
C1 C3 O5 110.816 C1 C3 H8 133.314
C2 C1 C3 102.654 C2 C1 H6 128.866
C2 N4 O5 105.595 C3 C1 H6 128.480
C3 O5 N4 108.693 N4 C2 H7 118.856
O5 C3 H8 115.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability