Volume 2 Chapter 7 Numeric Sub-menu *NW0n

Back to Table of Contents

*RCPn

Function

*RCPn are used to test for a specified value or range of values of reduced unit cell parameters.

CSD Contents

The six reduced unit cell parameters a, b, c, alpha, beta, gamma can be individually searched using the keywords *RCP1, *RCP2, *RCP3, *RCP4, *RCP5, *RCP6 respectively.

Graphics QUEST3D Procedure

Select *RCP1 or *RCP2 or *RCP3 or *RCP4 or *RCP5 or *RCP6 from the NUMERIC sub-menu and respond to the standard numeric prompts.

Basic QUEST Procedure

Ex.

T1 *RCP2  15.13-15.15

This will register hits for all entries having reduced cell b-value in the range 15.13 - 15.15Å.

Remarks

All six parameters are stored as floating-point numbers (a, b, c in Ångström (to 5 decimal places) and alpha, beta, gamma in degrees (to 4 decimal places)).

To cater for experimental errors such searches should always be expressed in terms of a range of values.

Related Keywords

*RCVOLUME, *METRICCLASS, and *ACELL, *BCELL, *CCELL, *FCELL, *ICELL, *PCELL, *RCELL accessed from SEARCH menu.

Back to Table of Contents

Volume 2 Chapter 7 Numeric Sub-menu *RCVOLUME.