Crystallography Open Database

Information card for entry 2104403

Preview

Coordinates	2104403.cif
Structure factors	2104403.hkl
Original IUCr paper	HTML
External links	ChemSpider

Structure parameters

Common name	benzocaine
Chemical name	ethyl 4-aminobenzoate
Formula	C9 H11 N O2
Calculated formula	C9 H11 N O2
SMILES	c1(ccc(cc1)N)C(=O)OCC
Title of publication	On the polymorphism of benzocaine; a low-temperature structural phase transition for form (II)
Authors of publication	Chan, Eric J.; Rae, A. David; Welberry, T. Richard
Journal of publication	Acta Crystallographica Section B
Year of publication	2009
Journal volume	65
Journal issue	4
Pages of publication	509 - 515
a	8.2424 ± 0.0004 Å
b	5.3111 ± 0.0003 Å
c	20.9044 ± 0.0012 Å
α	90°
β	90°
γ	90°
Cell volume	915.12 ± 0.09 Å³
Cell temperature	300 ± 2 K
Ambient diffraction temperature	300 ± 2 K
Number of distinct elements	4
Hermann-Mauguin space group symbol	P 21 21 21
Hall space group symbol	P_2n_2a
Residual factor for all reflections	0.0495
Residual factor for significantly intense reflections	0.0392
Weighted residual factors for significantly intense reflections	0.1035
Weighted residual factors for all reflections included in the refinement	0.1122
Goodness-of-fit parameter for all reflections included in the refinement	1.059
Diffraction radiation wavelength	0.71069 Å
Diffraction radiation type	MoKα
Has coordinates	Yes
Has disorder	No
Has F_obs	Yes

Version history

Revision	Date	Message	Files
201972 (current)	2017-10-13	cif/ Marking COD entries in range 2/10 that are known to be related to ChemSpider entries using the _cod_related_entry data loop.	2104403.cif 2104403.hkl
180904	2016-04-02	hkl/2/10/ (antanas@echidna) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/10/44.	2104403.cif 2104403.hkl
176768	2016-02-20	cif/2/ (antanas@kurmis) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in subrange 2/10.	2104403.cif 2104403.hkl
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2104403.cif 2104403.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.	2104403.cif 2104403.hkl
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2104403.cif 2104403.hkl
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2104403.cif 2104403.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).	2104403.cif 2104403.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.	2104403.cif 2104403.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.	2104403.cif 2104403.hkl
819	2009-09-11	hkl/ Adding Fobs data from the recent IUCr structure depositions.	2104403.cif 2104403.hkl
816	2009-09-09	cif/2/ Depositing structures from Acta-Cryst-B-2009_04/ Acta-Cryst-C-2009_07/ Acta-Cryst-C-2009_08/ Acta-Cryst-E-2009_07/ Acta-Cryst-E-2009_08/	2104403.cif