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Information card for entry 2104012
Preview
| Coordinates | 2104012.cif |
|---|---|
| Original IUCr paper | HTML |
| Formula | C30 H22 N4 O8 |
|---|---|
| Calculated formula | C30 H22 N4 O8 |
| SMILES | c1(c(C(=O)[O-])cc(c(c1)C(=O)[O-])C(=O)O)C(=O)O.[nH+]1ccc(cc1)c1ccncc1.[nH+]1ccc(cc1)c1ccncc1 |
| Title of publication | Variable-temperature neutron diffraction studies of the short, strong N···O hydrogen bonds in the 1:2 co-crystal of benzene-1,2,4,5-tetracarboxylic acid and 4,4'-bipyridyl |
| Authors of publication | Cowan, John A.; Howard, Judith A. K.; McIntyre, Garry J.; Lo, Samuel M.-F.; Williams, Ian D. |
| Journal of publication | Acta Crystallographica Section B |
| Year of publication | 2003 |
| Journal volume | 59 |
| Journal issue | 6 |
| Pages of publication | 794 - 801 |
| a | 7.541 ± 0.001 Å |
| b | 9.715 ± 0.001 Å |
| c | 10.204 ± 0.001 Å |
| α | 64.51 ± 0.01° |
| β | 72.03 ± 0.01° |
| γ | 76.08 ± 0.01° |
| Cell volume | 636.79 ± 0.14 Å3 |
| Cell temperature | 200 ± 2 K |
| Ambient diffraction temperature | 200 ± 2 K |
| Number of distinct elements | 4 |
| Space group number | 2 |
| Hermann-Mauguin space group symbol | P -1 |
| Hall space group symbol | -P 1 |
| Residual factor for all reflections | 0.1022 |
| Residual factor for significantly intense reflections | 0.0524 |
| Weighted residual factors for significantly intense reflections | 0.1188 |
| Weighted residual factors for all reflections included in the refinement | 0.1249 |
| Goodness-of-fit parameter for all reflections included in the refinement | 1.276 |
| Diffraction radiation probe | neutron |
| Diffraction radiation type | neutron |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| 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. |
2104012.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" |
2104012.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. |
2104012.cif |
| 91933 | 2013-12-28 | cif/ (saulius@koala.ibt.lt) Adding DOIs that could be assigned unambiguously to the range 2x CIFs. |
2104012.cif |
| 32112 | 2012-02-03 | cif/: committing an update of 45+ thous files, with information appended from the originals. | 2104012.cif |
| 31986 | 2012-01-04 | cif/ Changing more tags to match the dictionary specifications: -_diffrn_standards_interval_count none -_diffrn_standards_interval_time none -_diffrn_standards_number none +_diffrn_standards_interval_count 0 +_diffrn_standards_interval_time . +_diffrn_standards_number 0 |
2104012.cif |
| 26848 | 2011-09-28 | cif/2/, hkl/2/, html/ Reorganising CIFs of the range 2* into the "prefix-directory" tree. |
2104012.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). |
2104012.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. |
2104012.cif |
| 5310 | 2011-01-02 | cif/ Running cif_fix_enum with the core CIF dictionary on COD ranges 2, 8 and 9. Range 9 remained unchanged, and in ranges 2 and 8 there were 17309 modified files, most changes were fixes enumerator case. |
2104012.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. |
2104012.cif |
| 397 | 2008-06-20 | Adding new CIF files deposited from Acta-Cryst-B-2001-2003/. |
2104012.cif |
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Users of the data should acknowledge the original authors of the
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