CheckCIF-PLAT141-150

PLAT141 Type_4 s.u. on a - axis small or missing

The s.u. on the a-axis is small or missing. The presence of s.u.'s (where required) and value are checked. S.u.'s as given by the diffractometer software are often much smaller then realistic.

a轴的标准偏差(s.u.)太小或缺失。检查标准偏差(如需要)及其值。衍射仪软件给出的标准偏差通常比实际小得多。

(http://journals.iucr.org/services/cif/checking/PLAT141.html)

警告原因：a轴的标准偏差(s.u.)太小或缺失。

解决策略：若缺失，则检查是否还原过程某一步出问题，可重新还原数据。若太小，则适当增大其数值。

PLAT142 Type_4 s.u. on b - axis small or missing

The s.u. on the b-axis is small or missing. The presence of s.u.'s (where required) and value are checked. Su's as given by the diffractometer software are often much smaller then realistic.

b轴的标准偏差(s.u.)太小或缺失。检查标准偏差(如需要)及其值。衍射仪软件给出的标准偏差通常比实际小得多。

(http://journals.iucr.org/services/cif/checking/PLAT142.html)

警告原因：b轴的标准偏差(s.u.)太小或缺失。

解决策略：若缺失，则检查是否还原过程某一步出问题，可重新还原数据。若太小，则适当增大其数值。

PLAT143 Type_4 s.u. on c - axis small or missing

The s.u. on the c-axis is small or missing. The presence of s.u.'s (where required) and value are checked. Su's as given by the diffractometer software are often much smaller then realistic.

c轴的标准偏差(s.u.)太小或缺失。检查标准偏差(如需要)及其值。衍射仪软件给出的标准偏差通常比实际小得多。

(http://journals.iucr.org/services/cif/checking/PLAT143.html)

警告原因：c轴的标准偏差(s.u.)太小或缺失。

解决策略：若缺失，则检查是否还原过程某一步出问题，可重新还原数据。若太小，则适当增大其数值。

PLAT144 Type_4 s.u. on alpha small or missing

The s.u. on alpha is small or missing. The presence of s.u.'s (where required) and value are checked. Su's as given by the diffractometer software are often much smaller then realistic.

α角的标准偏差(s.u.)太小或缺失。检查标准偏差(如需要)及其值。衍射仪软件给出的标准偏差通常比实际小得多。

(http://journals.iucr.org/services/cif/checking/PLAT144.html)

警告原因：α角的标准偏差(s.u.)太小或缺失。

解决策略：若缺失，则检查是否还原过程某一步出问题，可重新还原数据。若太小，则适当增大其数值。

PLAT145 Type_4 s.u. on beta small or missing

The s.u. on beta is small or missing. The presence of s.u.'s (where required) and value are checked. Su's as given by the diffractometer software are often much smaller then realistic.

β角的标准偏差(s.u.)太小或缺失。检查标准偏差(如需要)及其值。衍射仪软件给出的标准偏差通常比实际小得多。

(http://journals.iucr.org/services/cif/checking/PLAT145.html)

警告原因：β角的标准偏差(s.u.)太小或缺失。

解决策略：若缺失，则检查是否还原过程某一步出问题，可重新还原数据。若太小，则适当增大其数值。

PLAT146 Type_4 s.u. on gamma small or missing

The s.u. on gamma is small or missing. The presence of s.u.'s (where required) and value are checked. Su's as given by the diffractometer software are often much smaller then realistic.

γ角的标准偏差(s.u.)太小或缺失。检查标准偏差(如需要)及其值。衍射仪软件给出的标准偏差通常比实际小得多。

(http://journals.iucr.org/services/cif/checking/PLAT146.html)

警告原因：γ角的标准偏差(s.u.)太小或缺失。

解决策略：若缺失，则检查是否还原过程某一步出问题，可重新还原数据。若太小，则适当增大其数值。

PLAT147 Type_1 s.u. on symmetry restricted cell angle

There should be no s.u. on symmetry constrained cell angles.  

Example: No s.u. on alpha, beta and gamma for orthorhombic symmetry.

对称限制的晶胞角度不应有标准偏差(s.u.)。

例如：对于正交对称来说，α、β和γ不存在标准偏差。

(http://journals.iucr.org/services/cif/checking/PLAT147.html)

警告原因：对称限制的晶胞角度不应有标准偏差(s.u.)，但数据给出了其标准偏差。

解决策略：将其标准偏差改为0即可。

PLAT148 Type_3 s.u. on a, b, or c - axis too large

The s.u. on the reported -axis is unexpectedly large.

所报告的晶轴的标准偏差(s.u.)出乎意料地大。

(http://journals.iucr.org/services/cif/checking/PLAT148.html)

例：PLAT148_ALERT_3_B su on the a - Axis is Too Large (x 1000) . 12 Ang.

PLAT148_ALERT_3_B su on the b - Axis is Too Large (x 1000) . 13 Ang.

PLAT148_ALERT_3_B su on the c - Axis is Too Large (x 1000) . 14 Ang.

警告原因：a、b、c轴误差较大。

解决策略：检查数值是否填错，否则需给出合理解释。对于这三个错误主要是收录晶体还原数据时，最终的晶胞参数偏差太大造成的，最好重新收录，实在要消除也可以，就是在ins文件中把偏差改小，详见下面的例子：

TITL A in Pnma

CELL 0.71073 12.1750 8.9250 8.9372 90.000 90.000 90.000

ZERR 8.00 0.0014 0.0008 0.0009 0.000 0.000 0.000

LATT 1

SYMM 0.5-X, -Y, 0.5+Z

SYMM -X, 0.5+Y, -Z

SYMM 0.5+X, 0.5-Y, 0.5-Z

在ZERR后面的三个单包参数的下面对应的偏差改到0.00**就可以了

PLAT149 Type_3 s.u. on alpha, beta or gamma too large

The s.u. on the reported angle is too large.

所报告的晶胞角度的标准偏差(s.u.)太大。

(http://journals.iucr.org/services/cif/checking/PLAT149.html)

警告原因：α、β、γ轴误差较大。

解决策略：检查数值是否填错，否则需给出合理解释。对于这三个错误主要是收录晶体还原数据时，最终的晶胞参数偏差太大造成的，最好重新收录，实在要消除也可以，就是在ins文件中把相应偏差改小。

PLAT150 Type_1 Check Volume

An ALERT is issued when the reported unit cell volume differs significantly from the volume calculated on the basis of the supplied cell dimensions.

当所报告的晶胞体积与基于所提供的晶胞尺寸所计算得到的晶胞体积明显不同时，发布此警告。

(http://journals.iucr.org/services/cif/checking/PLAT150.html)

警告原因：所报告的晶胞体积与基于所提供的晶胞尺寸所计算得到的晶胞体积明显不同。

解决策略：检查是否晶胞定错，否则需要给出合理解释。最好重新收录数据。