Volume 2 Chapter 7 Numeric Sub-menu *CLASS

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*CODEN is used to test for entries having a specified journal coden (code number).

CSD Contents

For each CSD entry the journal reference is identified by 4 search fields

year of publication

The coden is a number, assigned at the CCDC, and each coden corresponds to a single journal or part-journal, for example :

Biochim.Biophys.Acta has coden 113

J.Chem.Soc.,Perkin Trans.1 has coden 207

J.Chem.Soc.,Perkin Trans.2 has coden 188

Codens are used to avoid inconsistencies in the spelling and abbreviation of journal names; also to save space in the database.

Some users may be familiar with the International Coden system where, for example, Biochim.Biophys.Acta has international coden BBACAQ.

Appendixes 3, 4 and 5 list journal names, CCDC codens and international codens.

These are comprehensive only at the time of writing this User Manual. To obtain the codens for new journals which will appear in later updates of the database you must use the HELP system.

Graphics QUEST3D Procedure

Select *CODEN from the NUMERIC sub-menu and respond to the standard numeric prompts.

Basic QUEST Procedure

Normally a literature search will involve tests using several of the related keywords.

Ex. Find all entries published in 1989 in the journal Heterocycles which has coden 392.

T1  *CODE .EQ. 392
T2  *YEAR .EQ. 1989


Care must be taken in situations where a journal splits into several parts or undergoes various name changes. Some of the more important examples of these problems are listed below:

JOURNAL NAME                   YEARS                 CODEN
                             from   to
Acta Crystallogr.                  1967              001
Acta Crystallogr.,Sect.A     1968  1982              108
Acta Crystallogr.,Sect.B     1968  1982              107
Acta Cryst.,A (Fnd.Cryst)    1983                    621
Acta Cryst.,B (Str.Sci)      1983                    622
Acta Cryst.,C (Cr.Str.Comm.) 1983                    591
Acta Chem.Scand.                   1973              003
Acta Chem.Scand.Ser.A        1974  1988              305
Acta Chem.Scand.Ser.B        1974  1988              306
Acta Chem.Scand.             1989                    003
J.Chem.Soc.                        1965              002
J.Chem.Soc.A                 1966  1971              089
J.Chem.Soc.B                 1966  1971              088
J.Chem.Soc.C                 1966  1971              087
J.Chem.Soc.,Dalton Trans.    1972                    186
J.Chem.Soc.,Perkin Trans.1   1972                    207
J.Chem.Soc.,Perkin Trans.2   1972                    188
Proc.Chem.Soc.,London              1964              012
Chem.Commun.                 1965  1968              066
J.Chem.Soc.D                 1969  1971              120
J.Chem.Soc.,Chem.Commun.     1972                    182

Related Keywords

*VOLUME (in TEXT sub-menu), *PAGE (in TEXT sub-menu), *YEAR

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Volume 2 Chapter 7 Numeric Sub-menu *COORDINATES.