Crystallography Open Database

Information card for entry 1010721

1010720 << 1010721 >> 1010722

Preview

Coordinates	1010721.cif
Original paper (by DOI)	HTML

Structure parameters

Chemical name	Potassium dioxotetrahydridodiborate
Formula	B2 H4 K2 O2
Title of publication	Roentgenuntersuchung des Diborankaliums und seiner Hydrolysenprodukte, besonders des Dioxy-Diborankaliums
Authors of publication	Schwarz von Bergkampf, E
Journal of publication	Zeitschrift fuer Anorganische und Allgemeine Chemie
Year of publication	1935
Journal volume	225
Pages of publication	254 - 257
Number of distinct elements	4
Has coordinates	No
Has disorder	No
Has F_obs	No

Version history

Revision	Date	Message	Files
278158 (current)	2022-09-25	cod/ Reformatted the summary chemical formuale using the 'cif_filter' program.	1010721.cif
278153	2022-09-25	cod/ Reordered data items using the 'cif_filter' program to ensure that future changes to the file result in a minimal number of modified lines.	1010721.cif
120071	2014-07-11	Adding DOIs to range 1 structures.	1010721.cif
35911	2012-02-28	cif/ Reorganising ranges 1, 3, 5, 6 and 8 into a prefix-directory tree.	1010721.cif
1063	2010-03-31	cif/ Fixing all author names that had '=' instead of ' ' (space sign): grep '^[0-9]' author-names-with-=.lst\| awk '{print "../"substr($1,0,1)"/"$1".cif"}'\| xargs -i sh -xc " perl -i -pe 's/=/ /g if /_publ_author_name/.../^_/' {}" and restoring journal names manualy afterwards.	1010721.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.	1010721.cif
904	2009-11-23	cif/ Adding a loop with _atom_site_label and _atom_site_fract_{x,y,z} tags, adn with "?" as their values, to all COD CIFs that lacked atomic coodrinates: find ? -name \*.cif \ \| xargs -n1 -iX \ bash -c 'if [ $(cif_filter X \| wc -l) -eq 0 ]; \ then \ echo -e "loop_\n_atom_site_label\n_atom_site_fract_x\n_atom_site_fract_y\n_atom_site_fract_z\n? \ ? ? ?" >> X; \ ( set -x; vcif -l 2048 X ); \ fi' This "cosmetic" change makes it easier to process COD CIFs with scripts that pick only datablocks with atomic coordinates for processing (such as cif_fitler).	1010721.cif
720	2009-05-13	cod/cif/: Adding loop_ token in front of the _publ_author_name tag in all COD entries where _publ_author_name was not in a loop (this tag is loop-mandatory).	1010721.cif
19	2008-01-26	Changing all end-of-line codes from DOS style to UNIX style in all COD CIF files, for more convenient processing: In the cod/cif/ directory: ff \*.cif \| xargs perl -i -pe 's/\r\n/\n/'	1010721.cif
14	2008-01-14	Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files.	1010721.cif
13	2008-01-13	Setting the svn:keywords property to "Author Date Revision URL Id" for all CIF files in the cod/cif directory.	1010721.cif
1	2007-11-30	Adding all .cif files from the COD, downloaded in a Cod.zip file on 2007.02.07 (and the same Cod.zip is downloadable today, on 2007.11.29)	1010721.cif