Crystallography Open Database

Information card for entry 2017071

2017070 << 2017071 >> 2017072

Preview

Coordinates	2017071.cif
Structure factors	2017071.hkl
Original IUCr paper	HTML

Structure parameters

Chemical name	(3bR,5aR,9aR,9bR)-3b,6,6,9a-tetramethyl-4,5,5a,6,8,9,9a,9b,10,11- decahydrophenanthro[1,2-<i>c</i>]furan-7(3bH)-one
Formula	C20 H28 O2
Calculated formula	C20 H28 O2
SMILES	O=C1CC[C@]2([C@H](C1(C)C)CC[C@@]1([C@@H]2CCc2c1coc2)C)C
Title of publication	Absolute structures and conformations of the spongian diterpenes spongia-13(16),14-dien-3-one, epispongiadiol and spongiadiol
Authors of publication	Yong, Ken W. L.; Garson, Mary J.; Bernhardt, Paul V.
Journal of publication	Acta Crystallographica Section C
Year of publication	2009
Journal volume	65
Journal issue	4
Pages of publication	o167 - o170
a	12.3336 ± 0.0001 Å
b	7.4124 ± 0.0001 Å
c	18.2476 ± 0.0001 Å
α	90°
β	101.93 ± 0.001°
γ	90°
Cell volume	1632.19 ± 0.03 Å³
Cell temperature	130 ± 2 K
Ambient diffraction temperature	130 ± 2 K
Number of distinct elements	3
Space group number	4
Hermann-Mauguin space group symbol	P 1 21 1
Hall space group symbol	P 2yb
Residual factor for all reflections	0.0304
Residual factor for significantly intense reflections	0.0274
Weighted residual factors for significantly intense reflections	0.0692
Weighted residual factors for all reflections included in the refinement	0.0704
Goodness-of-fit parameter for all reflections included in the refinement	1.052
Diffraction radiation wavelength	1.5418 Å
Diffraction radiation type	CuKα
Has coordinates	Yes
Has disorder	No
Has F_obs	Yes

Version history

Revision	Date	Message	Files
180839 (current)	2016-04-02	cif/2/01/ (antanas@echidna) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/01/70.	2017071.cif 2017071.hkl
176760	2016-02-20	cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/01.	2017071.cif 2017071.hkl
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2017071.cif 2017071.hkl
88064	2013-08-29	Adding _cod_database_fobs_code data item to all COD CIFs that have Fobs deposited and did not have this data item yet.	2017071.cif 2017071.hkl
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2017071.cif 2017071.hkl
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2017071.cif 2017071.hkl
26029	2011-09-17	cif/2/ Reverting changes of revision 25271: ( cd cif/2/; svn merge -r25271:25270 . ) The problem was that the reprocessed files from IUCr, although were more complete, "resurrected" data errors that were corrected in the previous recisions. The additional data that have been extracted during the reprocessing will have to be merged without overwriting the existing values in COD files, except some explicit and controlled cases (such as publication titles and chemical names).	2017071.cif 2017071.hkl
25271	2011-09-10	cif/2/ Adding reporocessed IUCr CIFs for the years 1980-2010. The CIFs now contain more complete bibliography, substance names, correctly unfolded text fields (using the CIF line unfolding protocol), explicitely set cell angles, and _cod_data_source_block fields.	2017071.cif 2017071.hkl
966	2010-01-30	cif/ Adding _cod_database_code tags to all COD entries. Adding tag description to the cif_cod.dic dictionary so that COD entries can be validated.	2017071.cif 2017071.hkl
717	2009-05-13	cod/hkl/: Adding matched Fobs data for the recently deposited IUCr journal structures.	2017071.cif 2017071.hkl
715	2009-05-12	Adding CIFs from the Acta-Cryst-B-2009_02/ Acta-Cryst-C-2009_04/ Acta-Cryst-E-2009_04/ J-Appl-Cryst-2009_01-02/ deposition.	2017071.cif