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[求助]
散盡金三百,求高人解一晶體結(jié)構(gòu)! 已有3人參與
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如題。求高手解析一個(gè)晶體結(jié)構(gòu)。 注:結(jié)構(gòu)我已經(jīng)大致解了一下,配體就是初解的配體?臻g中有一個(gè)帶負(fù)電的硝酸根定不下來(lái),溶劑可能是甲醇和水分子(可能會(huì)有二氯甲烷)。 要求:check cif 不能有A類和B類錯(cuò)誤。 由于小弟金幣有限,只能拿出全部的304枚金幣。謝謝! |
專家顧問(wèn) (文壇精英)
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專家經(jīng)驗(yàn): +1066 |
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他這個(gè)化合物,稀土離子呈現(xiàn)+3價(jià),兩個(gè)帶氧的配體羥基應(yīng)該是脫質(zhì)子了,呈-2價(jià),所以缺少一個(gè)單位負(fù)電荷,就是陰離子作為抗衡陰離子存在,樓主就要精修確定這個(gè)。怎么看電荷平不平,你還要看一些金屬是否處于特殊點(diǎn)上,比如一個(gè)+2價(jià)金屬離子,如果它的占有率為0.5(處于鏡面上或者2重軸上),它對(duì)單胞電荷的貢獻(xiàn)就是+1;如果占有率是0.25(四重軸或者鏡面與二重軸的交點(diǎn)上),貢獻(xiàn)就是0.5,陰離子也一樣。至于為什么電荷不平不行,就像氯化鈉晶體中一定含有等量的氯離子和鈉離子一樣,一個(gè)宏觀物質(zhì)一定是電中性的,那么對(duì)于它的最小重復(fù)單元來(lái)說(shuō),也一定是電荷平衡的。有沒(méi)有氯離子就看樓主的原料了 |

金蟲 (著名寫手)

鐵桿木蟲 (小有名氣)

鐵桿木蟲 (正式寫手)
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新手練習(xí),僅供參考。 Alert level C PLAT052_ALERT_1_C Info on Absorption Correction Method Not Given . Please Do ! PLAT053_ALERT_1_C Minimum Crystal Dimension Missing (or Error) ... Please Check PLAT054_ALERT_1_C Medium Crystal Dimension Missing (or Error) ... Please Check PLAT055_ALERT_1_C Maximum Crystal Dimension Missing (or Error) ... Please Check PLAT220_ALERT_2_C Large Non-Solvent C Ueq(max)/Ueq(min) Range 3.1 Ratio PLAT230_ALERT_2_C Hirshfeld Test Diff for C17 -- C19 .. 6.8 su PLAT230_ALERT_2_C Hirshfeld Test Diff for C17 -- C31 .. 6.8 su PLAT234_ALERT_4_C Large Hirshfeld Difference C1 -- C32 .. 0.16 Ang. PLAT242_ALERT_2_C Low Ueq as Compared to Neighbors for ..... C17 Check PLAT342_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0118 Ang. PLAT731_ALERT_1_C Bond Calc 1.333(13), Rep 1.333(6) ...... 2 su-Rat N10 -C37 1.555 1.555 # 17 And 2 other PLAT731 Alerts More ... Alert level G PLAT040_ALERT_1_G No H-atoms in this Carbon Containing Compound .. Please Check PLAT042_ALERT_1_G Calc. and Reported MoietyFormula Strings Differ Please Check PLAT045_ALERT_1_G Calculated and Reported Z Differ by ............ 8.00 Ratio PLAT128_ALERT_4_G Alternate Setting for Input Space-Group C2/c I2/c Note PLAT606_ALERT_4_G VERY LARGE Solvent Accessible VOID(S) in Structure ! Info PLAT868_ALERT_4_G ALERTS Due to the use of _smtbx_masks Suppressed ! Info 有些C類錯(cuò)誤,也可以被處理掉。抱歉,目前,沒(méi)時(shí)間處理。 |

鐵桿木蟲 (正式寫手)
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困了,剛才標(biāo)錯(cuò)個(gè)元素,而且忘記加氫。 沒(méi)有A,B類錯(cuò)誤。 ![]() Alert level C PLAT052_ALERT_1_C Info on Absorption Correction Method Not Given . Please Do ! PLAT053_ALERT_1_C Minimum Crystal Dimension Missing (or Error) ... Please Check PLAT054_ALERT_1_C Medium Crystal Dimension Missing (or Error) ... Please Check PLAT055_ALERT_1_C Maximum Crystal Dimension Missing (or Error) ... Please Check PLAT230_ALERT_2_C Hirshfeld Test Diff for O3 -- C7 .. 7.0 su PLAT230_ALERT_2_C Hirshfeld Test Diff for C3 -- C7 .. 5.2 su PLAT342_ALERT_3_C Low Bond Precision on C-C Bonds ............... 0.0085 Ang. PLAT420_ALERT_2_C D-H Without Acceptor N5 - H5A ... Please Check And 3 other PLAT420 Alerts More ... PLAT731_ALERT_1_C Bond Calc 1.330(10), Rep 1.331(4) ...... 3 su-Rat C31 -N47 1.555 1.555 # 36 And 3 other PLAT731 Alerts More ... PLAT732_ALERT_1_C Angle Calc 124.6(7), Rep 124.6(3) ...... 2.33 su-Rat N17 -C31 -N13 1.555 1.555 1.555 # 34 PLAT732_ALERT_1_C Angle Calc 132.4(5), Rep 132.4(2) ...... 2.50 su-Rat C50 -O12 -ER1 1.555 1.555 1.555 # 79 Alert level G PLAT007_ALERT_5_G Number of Unrefined Donor-H Atoms .............. 8 Why ? PLAT042_ALERT_1_G Calc. and Reported MoietyFormula Strings Differ Please Check PLAT045_ALERT_1_G Calculated and Reported Z Differ by ............ 8.00 Ratio PLAT128_ALERT_4_G Alternate Setting for Input Space-Group C2/c I2/c Note PLAT606_ALERT_4_G VERY LARGE Solvent Accessible VOID(S) in Structure ! Info PLAT868_ALERT_4_G ALERTS Due to the use of _smtbx_masks Suppressed ! Info |

鐵桿木蟲 (小有名氣)

鐵桿木蟲 (正式寫手)

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