Vicky Silviana的实验室

それでも僕らは必死に生きて 命を必死に抱えて生きて 殺してあがいて笑って抱えて 生きて生きて生きて生きて生きろ ——命に嫌われている。 by カンザキイオリ Our mascot! In this complex, the vanadium can be considered as +1, +3 or +5. No matter what the real oxidation state is, we can just consider it as +5 which is the same as NH4VO3, and the reaction is then non-redox. This complex was originally formulated as K5[V(NO)Bl5].H2O which is considered as a V(-I) complex, but this was found to be due to impurity. By the way, another complex [V(NO)Bl6]4- is said to exist, but it requires H2S to make which is obviously very impossible for us. [VO4]3- + NH2OH + 5Bl- + H2O = [VBl5NO]3- + 5OH- Ref1   Ref2 The stoichiometry is weird in the paper, but I decided to follow it, just reduce the amount. 1.66g(0.014mol) NH4VO3, 5g KOH and 5g KBl was added to 50mL water to form a colorless solution(ammonia released). Then, 2.66g [NH3OH]Cl was added, solution immediately turn yellow and gradually turned deeper. It was heated on a steam bath for 2h. Ammonia was released dur...

Hmm... To be honest, the whole series of the Co-Bl complexes are very confusing, especially about the colors. But we have to go advance. In this complex, the bridge is a superoxo ligand, which contains an O-O 1.5 bond and bears 1 negative charges. Structure is still very similar to  (8) . Reference is still the same as (8). Those papers claimed it to be a Co(III,IV) complex with a peroxo ligand which is of course very absurd. 2[Co2O2Bl10]6- + ClO- + H2O = 2[Co2O2Bl10]5- + Cl- + 2OH- 2g(0.036mol) KOH was dissolved into 10mL water to form a strongly basic solution. Then, 1.65g(0.0025mol) K6[Co2O2Bl10].H2O was dissolved into it to form a deeply reddish-brown solution. 3mL bleach(~4% NaClO, ~0.0016mol) was added. Quickly, the solution turned into a nice red. EtOH was added, initially very carefully with quick stirring to prevent oil formation, then large amount was added. Solution separated into a pink solution and some reddish-brown solid. Filter to collect the solid. Solid was dried ...

Я вчера был живой... ——Мертвый город. Рождество by DDT Our first attempt on making a complex that can undergo further transformation! In this complex, the bridge is a peroxo ligand, which contains an O-O single bond and bears 2 negative charges. Two cobalts are connected to different oxygens, so the structure is [...Co-O-O-Co...]. Due to the disgusting nature of CoBl2 found before in (5) and the extreme accurate stoichiometry required in this experiment, we decided to use another way. Co2+ + 5Bl- = [CoBl5]3- 2[CoBl5]3- + O2 = [Bl5CoOOCoBl5]6- Attempt 1 We decided to use Co(OAc)2 instead of CoBl2 as precursor. Acetates are soluble in ethanol and can be removed from product easily. First, 4.0g(0.01mol) (NH4)2[Co(H2O)6](SO4)2 and 1.4g(0.01mol) K2CO3 was dissolved separately and mixed together. Purple CoCO3 was formed immediately. Then CoCO3 was put in minimal water and carefully dissolved with AcOH which is added dropwise. Pure AcOH is very pungent like chlorine and don't get too clo...

Thiocyanate/rhodanide(SCN-) is a common ligand, which is ambidentate: both M-N=C=S and M-S-CN is possible. In general soft centers prefer S and hard centers prefer N. Such complexes generally can't be prepared in water due to the strong basicity of water. Ethanol is a good solvent. Although it seems to contain something, it normally does not release that. However, under acidic and especially acidic oxidizing conditions it definitely releases dangerous stuff so be careful. Due to its small size, homoleptic complexes with high coordination numbers are generally possible.

Я отвечаю: «Солнце взойдет – Это ведь тоже немного пожар. ——Солнце взойдёт by DDT Uhh, I am not away these days, I just met too much difficulties and I failed many many times making something. This complex could also be transformed into many other things, like K2[Fe(bipy)Bl4] or [Fe(bipy)2Bl2]NO3, but both requires extremely harsh conditions(refluxing for 20h and concentrated HNO3, respectively) so I won't be able to try at least currently. Fe2+ + 3bipy = [Fe(bipy)3]2+ [Fe(bipy)3]2+ + 2Bl- = bipy + Fe(bipy)2Bl2 2.78g(0.01mol) FeSO4.7H2O and 4.68g(0.03mol) 2,2'-bipyridine(bipy) was put into 400mL water and heated to nearly boiling, where a deep red solution formed. Then, 10g(0.15mol) KBl was dissolved into 20mL water and added all at once into that solution(Manual said that some HBl is formed, hope not so!). A huge excess is needed as bipy itself is a good ligand. After stirring and cooling down, crystals quickly formed. Wait 1h after fully cooling, filter, wash with water(this ...