---
name: "cif2rdf"
section: "1"
platform: "linux"
package: "cod-tools"
version: "3.11.0+dfsg-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cif2rdf"
---

# cif2rdf(1)

parse a CIF file and describe its properties in RDF format.

## NAME

cif2rdf - parse a CIF file and describe its properties in RDF format.

## SYNOPSIS

cif2rdf --options input.cif inputs\*.cif

## DESCRIPTION

Parse a CIF file and describe its properties in RDF format.

## OPTIONS

\-C, --cod-number 1000000\
                   Use the specified number, 1000000 in this example, as\
                   a COD number for this structure; do not take the number\
                   from the data block name.

\-c, --always-continue\
                   Continue processing and return successful return status\
                   even if errors are diagnosed.

\-c-, --always-die\
                   Stop and return error status if errors are diagnosed.

\--use-attached-hydrogens\
                   Include number of implicit hydrogens, specified using\
                   \_atom\_site\_attached\_hydrogens tag, into the formula\
                   sum (default).

\--no-use-attached-hydrogens,

\--dont-use-attached-hydrogens,

\--ignore-attached-hydrogens\
                   Ignore number of implicit hydrogens, specified using\
                   \_atom\_site\_attached\_hydrogens tag, in calculation of\
                    the formula sum.

\--reformat-space-group\
                   Correct the formatting of Hermann-Mauguin symmetry\
                   space group symbol.

\--no-reformat-space-group,

\--dont-reformat-space-group,

\--leave-space-group\
                   Do not correct the formatting of Hermann-Mauguin\
                   symmetry space group symbol (default).

\--use-datablocks-without-coordinates,

\--use-all-datablocks\
                   Do not filter out data blocks without coordinates.

\--no-use-datablocks-without-coordinates,

\--do-not-use-datablocks-without-coordinates,

\--dont-use-datablocks-without-coordinates,

\--skip-datablocks-without-coordinates\
                   Filter out data blocks without coordinates (default).

\--require-only-doi\
                   Do not require all bibliographic details (authors,\
                   journal name, title, year, volume and first page of\
                   the publication) to be present if publication DOI is\
                   specified.

\--require-full-bibliography\
                   Require author names, journal name, volume, publication\
                   title, year and first page to be present (default).

\--columns file,flags,Robs

\--columns "file flags Robs"\
                   Print only columns specified in this option.

\--vocabulary-namespace cod\
                   Use vocabulary namespace "cod" to prefix properties\
                   native to the queried database.

\--vocabulary-url-prefix http://www.crystallography.net/cod/doc/rdf/\
                   Specify URL prefix for database's native namespace.

\--prefix, --db-url-prefix http://www.crystallography.net/cod/\
                   Specify URL prefix for all objects in the queried database.

\--postfix, --db-url-postfix .html\
                   Specify URL postfix for all objects in the queried database.

\--split-author-names\
                   Split author names in internal database representation at\
                   semicolons (';') to produce RDF-parsable list of author names.\
                   Each author in such list is marked with "author" property\
                   instead of "authors", which is used for non-split value\
                   (default).

\--no-split-author-names, --dont-split-author-names\
                   Make no assumptions about internal database representation\
                   of author list.

\--xml-output\
                   Output RDF in XML carrier format (default).

\--n3-output\
                   Output RDF in N3 (Notation3) carrier format.

\--turtle-output\
                   Output RDF in Turtle carrier format.

\--ntriples-output, --n-triples-output\
                   Output RDF in N-Triples carrier format.

\--replace-utf-codepoints-from\
                   Replace Unicode code points starting at specified\
                   point with carrier format-specific entities.

\--no-replace-utf-codepoints, --dont-replace-utf-code-points\
                   Leave Unicode code points unescaped (default).

\--html-utf-escapes\
                   Escape Unicode code points using HTML hexadecimal\
                   format corresponding to '&#x%04X;' formatted string\
                   (default).

\--internal-utf-escapes\
                   Escape Unicode code points using internal format\
                   corresponding to '\\u%04X' formatted string.

\--utf-escape-format\
                   Escape Unicode code points using format\
                   corresponding to the provided formatted string.

\--no-header\
                   Skip header of corresponding format. May be useful\
                   for generation of catenable output.

\--no-footer\
                   Skip footer of corresponding format. May be useful\
                   for generation of catenable output.

\--only-header\
                   Print header of corresponding format and exit.

\--only-footer\
                   Print footer of corresponding format and exit.

\--continue-on-errors\
                   Do not terminate script if errors are raised.

\--die-on-errors,

\--no-continue-on-errors,

\--do-not-continue-on-errors,

\--dont-continue-on-errors,

\--exit-on-errors\
                   Terminate script immediately if errors are raised (default).

\--continue-on-warnings\
                   Do not terminate script if warnings are raised (default).

\--die-on-warnings\
                   Terminate script immediately if warnings are raised.

\--continue-on-notes\
                   Do not terminate script if notes are raised (default).

\--die-on-notes\
                   Terminate script immediately if notes are raised.

\--use-perl-parser\
                   Use the Perl parser for parsing CIFs.

\--use-c-parser\
                   Use the faster C parser for parsing CIFs (default).

\--help, --usage\
                   Output a short usage message (this message) and exit.

\--version\
                   Output version information and exit.

## REPORTING BUGS

Report cif2rdf bugs using e-mail: cod-bugs@ibt.lt