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Computational Chemistry Comparison and Benchmark DataBase
Release 22 (May 2022) Standard Reference Database 101
National Institute of Standards and Technology
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You are here: Home > Geometry > Calculated > Calculated geometry OR Calculated > Geometry > Calculated geometry
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Geometry for C5H8O2 (Acetylacetone)
1A C2
1910171554
InChI=1S/C5H8O2/c1-4(6)3-5(2)7/h3H2,1-2H3 INChIKey=YRKCREAYFQTBPV-UHFFFAOYSA-N
MP2/3-21G*
Point group is C2
| Atom |
Internal |
|
Principal |
| x (Å) |
y (Å) |
z (Å) |
|
a (Å) |
b (Å) |
c (Å) |
| C1 |
0.0000 |
0.0000 |
1.0639 |
|
0.0000 |
0.0000 |
1.0639 |
| C2 |
0.0000 |
1.2240 |
0.1219 |
|
1.2136 |
-0.1592 |
0.1219 |
| C3 |
0.0000 |
-1.2240 |
0.1219 |
|
-1.2136 |
0.1592 |
0.1219 |
| C4 |
-1.3951 |
1.6270 |
-0.3429 |
|
1.4317 |
-1.5949 |
-0.3429 |
| C5 |
1.3951 |
-1.6270 |
-0.3429 |
|
-1.4317 |
1.5949 |
-0.3429 |
| O6 |
1.0623 |
1.7523 |
-0.2761 |
|
1.8756 |
0.8253 |
-0.2761 |
| O7 |
-1.0623 |
-1.7523 |
-0.2761 |
|
-1.8756 |
-0.8253 |
-0.2761 |
| H8 |
-0.9051 |
-0.0110 |
1.6764 |
|
-0.1286 |
-0.8960 |
1.6764 |
| H9 |
0.9051 |
0.0110 |
1.6764 |
|
0.1286 |
0.8960 |
1.6764 |
| H10 |
-1.3198 |
2.3361 |
-1.1703 |
|
2.1446 |
-1.6124 |
-1.1703 |
| H11 |
-1.9385 |
0.7263 |
-0.6512 |
|
0.4680 |
-2.0166 |
-0.6512 |
| H12 |
-1.9419 |
2.0879 |
0.4883 |
|
1.8176 |
-2.1970 |
0.4883 |
| H13 |
1.3198 |
-2.3361 |
-1.1703 |
|
-2.1446 |
1.6124 |
-1.1703 |
| H14 |
1.9385 |
-0.7263 |
-0.6512 |
|
-0.4680 |
2.0166 |
-0.6512 |
| H15 |
1.9419 |
-2.0879 |
0.4883 |
|
-1.8176 |
2.1970 |
0.4883 |
Atom - Atom Distances (Å)
| |
C1 |
C2 |
C3 |
C4 |
C5 |
O6 |
O7 |
H8 |
H9 |
H10 |
H11 |
H12 |
H13 |
H14 |
H15 |
| C1 |
|
1.5445 |
1.5445 |
2.5637 |
2.5637 |
2.4484 |
2.4484 |
1.0929 |
1.0929 |
3.4915 |
2.6883 |
2.9089 |
3.4915 |
2.6883 |
2.9089 |
| C2 |
1.5445 |
| 2.4480 |
1.5247 |
3.2079 |
1.2514 |
3.1852 |
2.1820 |
2.1696 |
2.1560 |
2.1455 |
2.1568 |
4.0108 |
2.8565 |
3.8567 |
| C3 |
1.5445 |
2.4480 |
| 3.2079 |
1.5247 |
3.1852 |
1.2514 |
2.1696 |
2.1820 |
4.0108 |
2.8565 |
3.8567 |
2.1560 |
2.1455 |
2.1568 |
| C4 |
2.5637 |
1.5247 |
3.2079 |
| 4.2865 |
2.4615 |
3.3964 |
2.6459 |
3.4612 |
1.0923 |
1.0962 |
1.0966 |
4.8746 |
4.0922 |
5.0624 |
| C5 |
2.5637 |
3.2079 |
1.5247 |
4.2865 |
| 3.3964 |
2.4615 |
3.4612 |
2.6459 |
4.8746 |
4.0922 |
5.0624 |
1.0923 |
1.0962 |
1.0966 |
| O6 |
2.4484 |
1.2514 |
3.1852 |
2.4615 |
3.3964 |
| 4.0983 |
3.2851 |
2.6209 |
2.6105 |
3.1935 |
3.1180 |
4.1930 |
2.6556 |
4.0132 |
| O7 |
2.4484 |
3.1852 |
1.2514 |
3.3964 |
2.4615 |
4.0983 |
| 2.6209 |
3.2851 |
4.1930 |
2.6556 |
4.0132 |
2.6105 |
3.1935 |
3.1180 |
| H8 |
1.0929 |
2.1820 |
2.1696 |
2.6459 |
3.4612 |
3.2851 |
2.6209 |
| 1.8103 |
3.7128 |
2.6513 |
2.6252 |
4.2965 |
3.7438 |
3.7190 |
| H9 |
1.0929 |
2.1696 |
2.1820 |
3.4612 |
2.6459 |
2.6209 |
3.2851 |
1.8103 |
| 4.2965 |
3.7438 |
3.7190 |
3.7128 |
2.6513 |
2.6252 |
| H10 |
3.4915 |
2.1560 |
4.0108 |
1.0923 |
4.8746 |
2.6105 |
4.1930 |
3.7128 |
4.2965 |
| 1.8011 |
1.7888 |
5.3663 |
4.5016 |
5.7412 |
| H11 |
2.6883 |
2.1455 |
2.8565 |
1.0962 |
4.0922 |
3.1935 |
2.6556 |
2.6513 |
3.7438 |
1.8011 |
| 1.7756 |
4.5016 |
4.1403 |
4.9271 |
| H12 |
2.9089 |
2.1568 |
3.8567 |
1.0966 |
5.0624 |
3.1180 |
4.0132 |
2.6252 |
3.7190 |
1.7888 |
1.7756 |
| 5.7412 |
4.9271 |
5.7028 |
| H13 |
3.4915 |
4.0108 |
2.1560 |
4.8746 |
1.0923 |
4.1930 |
2.6105 |
4.2965 |
3.7128 |
5.3663 |
4.5016 |
5.7412 |
| 1.8011 |
1.7888 |
| H14 |
2.6883 |
2.8565 |
2.1455 |
4.0922 |
1.0962 |
2.6556 |
3.1935 |
3.7438 |
2.6513 |
4.5016 |
4.1403 |
4.9271 |
1.8011 |
| 1.7756 |
| H15 |
2.9089 |
3.8567 |
2.1568 |
5.0624 |
1.0966 |
4.0132 |
3.1180 |
3.7190 |
2.6252 |
5.7412 |
4.9271 |
5.7028 |
1.7888 |
1.7756 |
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Maximum atom distance is 5.7412Å
between atoms H10 and H15.
Calculated Bond Angles (degrees) (Ignoring Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
C1 |
C2 |
C4 |
113.291 |
|
C1 |
C2 |
O6 |
121.906 |
|
C1 |
C3 |
C5 |
113.291 |
|
C1 |
C3 |
O7 |
121.906 |
|
C2 |
C1 |
C3 |
104.837 |
|
C4 |
C2 |
O6 |
124.624 |
|
C5 |
C3 |
O7 |
124.624 |
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Calculated Bond Angles (degrees) (Involving Hydrogens)
| atom1 |
atom2 |
atom3 |
angle |
|
atom1 |
atom2 |
atom3 |
angle |
|
C2 |
C1 |
H8 |
110.473 |
|
C2 |
C1 |
H9 |
109.501 |
|
C2 |
C4 |
H10 |
109.841 |
|
C2 |
C4 |
H11 |
108.793 |
|
C2 |
C4 |
H12 |
109.649 |
|
C3 |
C1 |
H8 |
109.501 |
|
C3 |
C1 |
H9 |
110.473 |
|
C3 |
C5 |
H13 |
109.841 |
|
C3 |
C5 |
H14 |
108.793 |
|
C3 |
C5 |
H15 |
109.649 |
|
H8 |
C1 |
H9 |
111.829 |
|
H10 |
C4 |
H11 |
110.767 |
|
H10 |
C4 |
H12 |
109.620 |
|
H11 |
C4 |
H12 |
108.140 |
|
H13 |
C5 |
H14 |
110.767 |
|
H13 |
C5 |
H15 |
109.620 |
|
H14 |
C5 |
H15 |
108.140 |
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For information on specific bond angles or dihedrals
see the geometry comparison page in section
Comparisons > Geometry > Bonds, angles.