I recently solved a crystal structure for small molecule and submitted the cif file for scanning alerts, if any. I was able to rectify all the alerts but got stuck with this one.
PLAT213 Type_2 Test ratio adp max/min in main residue(s)
The main axes values of the ADP(S) of the main residue(s) are determined and
ordered: U1 < U2 < U3. The value of SQRT(U3/U1) main axis ADP ratio (Angstrom
Units) is tested for the main residue(s). Large values may indicate unresolved
disorder. Oblate criterium: U3 - U2 < U2 - U1. Prolate otherwise.
PLAT340 Type_3 Check Bond Precision for C-C in Light Atom Structures (Z(max) < 20)
The average s.u. for X-Y bonds is tested (named bond-precision). X-Y will
generally be C-C bonds, unless there are none. In the last case the s.u.'s of
the lowest element numbers are considered (excluding hydrogen). There are
three test ranges: one for structures with the largest element Z < 20, one
for the largest Z in the range 20 to 39 and one for structures with Z(max) 40
or higher (_340, _341 and _342 respectively).
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