Crystallography Open Database

Information card for entry 2103681

Preview

Coordinates	2103681.cif
Original IUCr paper	HTML

Structure parameters

Formula	C8 H2 Cl4 K2 O8
Calculated formula	C8 H2 Cl4 K2 O8
Title of publication	Asymmetric hydrogen bonds in centrosymmetric environment: neutron study of very short hydrogen bonds in potassium hydrogen dichloromaleate
Authors of publication	Olovsson, I.; Ptasiewicz-Bak, H.; Gustafsson, T.; Majerz, I.
Journal of publication	Acta Crystallographica Section B
Year of publication	2001
Journal volume	57
Journal issue	3
Pages of publication	311 - 316
a	5.083 ± 0.003 Å
b	7.881 ± 0.005 Å
c	8.863 ± 0.005 Å
α	81.72 ± 0.05°
β	84.78 ± 0.05°
γ	89.59 ± 0.05°
Cell volume	349.9 ± 0.4 Å³
Cell temperature	295 K
Number of distinct elements	5
Space group number	1
Hermann-Mauguin space group symbol	P 1
Hall space group symbol	P 1
Residual factor for significantly intense reflections	0.0638
Weighted residual factors for all reflections included in the refinement	0.0817
Goodness-of-fit parameter for all reflections included in the refinement	1.0383
Diffraction radiation probe	neutron
Diffraction radiation wavelength	1.207 Å
Diffraction radiation type	neutron
Has coordinates	Yes
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
176768 (current)	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.	2103681.cif
129439	2015-01-07	cod/ (robertas@burundukas) Correcting values of _exptl_crystal_density_meas and _exptl_crystal_density_method data items: codsql "select codid from validation where message like '%\\'_exptl_crystal_density_meas\\' value \"not measured\" is %'" -NB \ \| codid2file \ \| xargs perl -i -pe "s/_exptl_crystal_density_meas\\s+'not +measured'/_exptl_crystal_density_meas ?/i; \ s/_exptl_crystal_density_method\\s+('not +measured'\|\\?\|none)/_exptl_crystal_density_method ./i"	2103681.cif
106285	2014-03-15	cod/ (saulius@kolibris) Adding the '_diffrn_radiation_probe neutron' data item to those COD CIFs that declared neuron radiation in their _diffrn_radiation_type data field, and did not have a _diffrn_radiation_probe item yet: codsql 'select file from data where radiation is null and radType like "%neutron%"' -NB \ \| codid2file \ \| xargs -i sh -c 'test -f {} && ( set -x; echo _diffrn_radiation_probe neutron >> {} )' Two files that had no newlines at the end were fixed manually.	2103681.cif
91933	2013-12-28	cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs.	2103681.cif
32112	2012-02-03	cif/: committing an update of 45+ thous files, with information appended from the originals.	2103681.cif
26848	2011-09-28	cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree.	2103681.cif
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).	2103681.cif
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.	2103681.cif
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.	2103681.cif
397	2008-06-20	Adding new CIF files deposited from Acta-Cryst-B-2001-2003/.	2103681.cif