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竺羽心木蟲 (小有名氣)
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[求助]
求各位大神指點! 已有2人參與
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我收了一個晶體,數(shù)據(jù)不太好,解完以后R值一直修不下去,check了發(fā)現(xiàn)很多問題,請問怎么解決,另,如果發(fā)文章這個數(shù)據(jù)能用嗎? CHEMW03_ALERT_2_A ALERT: The ratio of given/expected molecular weight as calculated from the _atom_site* data lies outside the range 0.90 <> 1.10 From the CIF: _cell_formula_units_Z 17 From the CIF: _chemical_formula_weight 165.63 TEST: Calculate formula weight from _atom_site_* atom mass num sum C 12.01 5.65 67.83 H 1.01 0.00 0.00 N 14.01 0.47 6.59 O 16.00 1.53 24.47 Si 28.09 0.12 3.30 P 30.97 0.47 14.58 Cu 63.55 0.24 14.95 Calculated formula weight 131.72 RFACR01_ALERT_3_A The value of the weighted R factor is > 0.45 Weighted R factor given 0.470 SHFSU01_ALERT_2_A The absolute value of parameter shift to su ratio > 0.20 Absolute value of the parameter shift to su ratio given 0.612 Additional refinement cycles may be required. PLAT043_ALERT_1_A Calculated and Reported Mol. Weight Differ by .. 288.26 Check PLAT051_ALERT_1_A Mu(calc) and Mu(CIF) Ratio Differs from 1.0 by . 73.64 % PLAT057_ALERT_3_A Correction for Absorption Required RT(exp) ... 1.81 Do ! PLAT078_ALERT_1_A No H-atoms, but _solution_hydrogens reported as geom Check PLAT079_ALERT_1_A No H-atoms, but _hydrogen_treatment reported as mixed Check PLAT080_ALERT_2_A Maximum Shift/Error ............................ 0.61 Why ? PLAT084_ALERT_3_A High wR2 Value (i.e. > 0.25) ................... 0.47 Report PLAT201_ALERT_2_A Isotropic non-H Atoms in Main Residue(s) ....... 13 Report |
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