data byla
1 Vlastnosti: červený krychlový krystal. Absorpce vlhkosti. Rozklad při zahřátí.
2 Rozpustnost: rozpustný ve vodě, alkoholu, etheru, acetonu, pyridinu. Nerozpustný v chloroformu, toluenu.
Vlastnosti struktury
to form sulfur iron cyanide followed the "hybrid DSP" iron arrangement extranuclear formula: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2 or [Ar] 3d 6 4s 2 . Since there are five tracks 3d level, so that the iron loss of three electrons, iron ions formed is formed in the half-filled d orbital. Ratio of ferrous ion thereby lose two electrons to form stable. (See rule Hund) passes through the reformer, there are two 3d orbitals, one 4s and three 4p orbital tracks hybridization, to form a "DSP hybrid orbital" (the track rail type). Thereby know the extending direction of the electron cloud is octahedron, which is expressed as complex ions: [Fe (SCN) 6 ] 3 - .
Computational Chemistry Data h2>
1, hydrofobní parametr pro výpočet referenční hodnoty (XlogP): ne
2, počet donorů vodíkové vazby: 0
< p> 3, the number of hydrogen bond acceptor: 64, otočně chemicky číslo: 0
5, počet vzájemných tautomerů: ne
6, topologická plocha molekulárního polárního povrchu: 74,4
7, počet těžkých atomů: 10
8, povrchový náboj: 0
9, complexity: 31.3 < / p>
10, počet izotopových atomů: 0
11, určuje počet atomů stereocentrum: 0
12, počet nejistých atomů ve stereocentru: 0
13, k určení čísla stereocentra chemické vazby: 0
14, počet nejistých stereocentrů chemické vazby: 0
15, the number of covalent bond units: 4 < / p>
připravený
method 3Ba (SCN) 2 + method Fe 2 (SO 4 ) 3 = 2Fe (SCN) 3 + 3BaSO 4 ↓ .
Equal amounts of Ba (SCN) 2 solution and Fe 2 (SO 4 ) < sub>3 mixed solution, place some time. Was removed by filtration BaSO 4 precipitate. The filtrate was placed on the ceramic desiccator until small crystals appear. From the solution was poured large crystals, and then evaporated. Repeated several times until a constant component of the crystal.
Hlavní aplikace
1, may be utilized in the analytical chemistry iron thiocyanate solution was red color to test Fe 3 + and the presence of color Determination of Fe 3 + .
on the method used to identify the iron sulfur ferricyanide: Take SCN - solution, and 3Mixed Fe +, i.e. there appeared blood red. The color is more pronounced in amyl alcohol or ether. However, it must be removed nitrite, otherwise it will generate before the experiment NOSCN, red color reaction, interference experiments, but the red disappear after heating. Sodium carbonate solution will interfere with the experiment, the iron hydroxide precipitate was generated, and color development time is not long, it will soon be reduced to a colorless sulfur ferrocyanide.
fluorid, chlorid rtuťnatý může červené bělit:
2 [FeSCN 2 + ] + HgCl 2 = 2 [Fe 3 + ] + 2Cl - + Hg (SCN) 2
Fe (SCN) 3 + 6F - = [FeF 6 ] 3 - + 3SCN -
< p> PO4 3 - , Ac - , IO 3 - interference experiments. Fe (SCN) 3 color is actually mainly [FeSCN] 2 + color. [Fe (CN) 6 ] 3 - with Fe 2 + effect generated blue precipitate, this phenomenon can be used to verify Fe 3 + if it contains Fe 2 + .2, použití video děl, která byla často charakteristická pro červenou krev, k napodobení krve, k dosažení požadovaného zobrazovacího efektu.