156301-37-0

Upstream product

• 102-54-5 ferrocene 
• 105560-52-9 potassium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate 
• 37298-35-4 Fe(C₅H₅)2⁽¹⁺⁾*HSO₄^(1-)=[Fe(C₅H₅)2]HSO₄ 
• 79060-88-1 sodium tetrakis[(3,5-di-trifluoromethyl)phenyl]borate 
• 1282-37-7 ferrocenium(III) tetrafluoroborate 

Downstream Products

• 156301-40-5 Nb[C₆H₃(CH₃)3]2⁽¹⁺⁾*B(C₆H₃(CF₃)2)4^(1-)=[Nb(C₆H₃(CH₃)3)2][B(C₆H₃(CF₃)2)4] 
• 102-54-5 ferrocene 
• 740808-77-9 [W2Cp2(μ-H)(CO)2(μ-(EtO)2POP(OEt)2)](B(3,5-C6H3(CF3)2)4) 

Relevant academic research and scientific papers

Selective oxidants for organometallic compounds containing a stabilising anion of highly reactive cations: (3,5(CF3)2C6H3)4B -)Cp2Fe+ and (3,5(CF3)2C6H3)4B -)Cp*2Fe+

A major interest in ferrocenium compounds arises from their usefulness as selective oxidants to prepare mixed-valence metallocenic stable compounds. In this paper, Cp2FeBAr′4=((3,5(CF3)2C 6H3)4B-)Cp2Fe +) (a), and Cp*2FeBAr′4=((3,5(CF3) 2C6H3)4B-) Cp*2Fe+) (b) are reported. These compounds have wide applications in the obtention of new organometallic salts with improved stability. The selective oxidation capacity of compounds a and b was investigated by the reaction of [Cp*CoII(C8H6)FeII(C 8H7)] with stoichiometric quantities of Cp2FeBAr′4 or Cp*2FeBAr′4 where [Cp*CoIII(C8H6)FeII(C 8H7)]BAr′4 was exclusively obtained. All salts that have BAr′4- as counterion showed an enhanced solubility in low-polarity solvents, especially in diethyl ether. This fact allowed us to perform non-conventional measurements like cyclic voltammetry in diethyl ether as solvent with NaBAr′4 as supporting electrolyte. Single-crystal structural determination of a and b was also achieved.

Efficient method for the preparation of aromatic bromides and iodides by ferrocenium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate-catalyzed halogenation with bromine and iodine monochloride

Direct iodination and bromination of various aromatic compounds with 1.1-2.0 molar amounts of iodine monochloride (ICl) and 1.1-3.0 molar amounts of bromine proceeded smoothly to afford the corresponding aromatic iodides and bromides, respectively, in good to excellent yields by using 0.05 molar amount of ferrocenium tetrakis[3,5-bis(trifluoromethyl)phenyl]borate, Cp2FeB[3,5-(CF3)2C6H 3]4 (1), in the presence of ZnO. Iodination of toluene in the co-existence of 0.5 molar amount of DDQ also proceeded to give iodotoluenes in high yield.

Tetracyanomanganate(II) and its salts of divalent first-row transition metal ions

The first known paramagnetic, tetrahedral cyanide complex, [MnII(CN)4]2-, is formed by the photoinduced decomposition of [MnIV(CN)6]2- in nonaqueous solutions or by thermal decomposition in the solid state. In acetonitrile or dichloromethane, photoexcitation into the ligand-to-metal charge transfer band (λmax = 25 700 cm-1, ε = 3700 cm-1 M-1) causes the homolytic cleavage of cyanide radicals and reduction of MnIV. Free cyanide in dichloromethane leads to the isolation of polycyanide oligomers such as [C12N12]2- and [C4N4]-, which was crystallographically characterized as the PPN+ salt C40H30N5P2: monoclinic space group = 12/a, a = 18.6314(2) A, b = 9.1926(1) A, c = 20.8006(1), β = 106.176(2)°, Z = 4]. In the solid state MnIV-CN bond homolysis is thermally activated above 122 °C, according to differential scanning calorimetry measurements, leading to the reductive elimination of cyanogen. The [MnII(CN)4]2- ion has a dynamic solution behavior, as evidenced by its concentration-dependent electronic and electron paramagnetic spectra, that can be attributed to aggregation of the coordinatively and electronically unsaturated (four-coordinate, 13-electron) metal center. Due to dynamics and lability of [MnII(CN)4]2- in solution, its reaction with divalent first-row transition metal cations leads to the formation of lattice compounds with both tetrahedral and square planar local coordination geometries of the metal ions and multiple structural and cyano-linkage isomers. α-MnII[MnII(CN)4] has an interpenetrating sphalerite- or diamond-like network structure with a unit cell parameter of a = 6.123 A (P43m space group) while a β-phase of this material has a noninterpenetrating disordered lattice containing tetrahedral [MnII(CN)4]2-. Linkage isomerization or cyanide abstraction during formation results in α-MnII[CoII(CN)4] and MnII[NiII(CN)4] lattice compounds, both containing square planar tetracyanometalate centers. α-MnII[CoII(CN)4] is irreversibly transformed to its β-phase in the solid state by heating to 135 °C, which causes a geometric isomerization of [CoII(CN)4]2- from square planar (vCN = 2114 cm-1, S = 1/2) to tetrahedral (vCN = 2158 cm-1, S = 3/2) as evidenced by infrared and magnetic susceptibility measurements. MnII[NiII(CN)4] is the only phase formed with NiII due to the high thermodynamic stability of square planar [NiII(CN)4]2-.

Synthesis, crystal structure, and reactions of the 17-valence-electron rhenium methyl complex [(η5-C5Me5)Re(NO)(P(4-C6H4CH3)3)(CH3)]*+ B(3,4-C6H3(CF3)2)4-: experimental and computational bonding comparisons with 18-electro

Reactions of methyl complex (η5-C5Me5)Re(NO)(P(4-C6H4CH3)3)(CH3) (2b) and the ferrocenium salt (η5-C5H5)2Fe*+ BArF- (BArF-=B(3,5-C6H3(CF3)2)4-) or the trityl salt Ph3C

Synthesis and reactivity of the cationic methylene complex [Cp2Re=CH2]+

Reaction of Cp2ReCH2R (R = H, CH3) (Cp = η5-C5H5) with [Ph3C]B(Ar′)4 (Ar′ = 3,5-CF3)2C6H3) generates carbene complexes [Cp

Synthesis, reactivity, and crystal and molecular structures of Nb(L) (η6-C6H5-nXn) 2B(C6H5-n,Xn)2, a class of mononuclear metal compounds containing the 12-electron-donor tetraarylborato ligand

The one-electron oxidation of Nb(mes)2 (mes = 1,3,5-trimethylbenzene) with ferrocenium tetraarylborate, produces the 16-electron [Nb(mes)2]+ cation, which adds disubstituted symmetrical alkynes to give the ionic compounds [Nb(mes)2)(alkyne)][Y] (alkyne = MeC2Me, Y = BPh4 (1a), Y = B(p-FC6H4)4 (1b), Y = B[3,5-(CF3)2C6H3]4 (1c); alkyne = PhC2Ph, Y = BPh4 (2a) Y = B(p-FC6H4)4 (2b)). 2b crystallizes in space group C2/c (No. 15) with four formula units in cells of dimensions a = 17.640(3) ?, b = 16.8386(8) ?, c = 19.616(2) ?, and β = 97.230(9)°; the [Nb(mes)2(PhC2Ph)]+ cation contains bent η6-mesitylene ligands, a coordination position being occupied by PhC2Ph as a formal two-electron donor. The alkyne in 1a-c is displaced by CO at room temperature and at atmospheric pressure to give the carbonyl derivatives [Nb-(mes)2CO] [Y] (3a-c). Thermal treatment of 1a,b and 2a in toluene gave mesitylene displacement and formation of the neutral covalent compounds containing the uninegative tetraarylborato ligand of formula [Nb(RC2R)(η6-C6H4X) 2B(C6H4X)2] (R = Me, X = H (4a), X = p-F (4b); R = Ph, X = H (5a)). 4a crystallizes in space group P421m (No. 113), with two formula units in cells of dimensions a = 9.734(1) ? and c = 11.6333(9) ?; 4b crystallizes in space group P212121 (No. 19) with eight formula units in cells of dimensions a = 11.776(3) ?, b = 15.666(3) ?, and c = 28.042(5) ?. 4a,b both contain the novel bonding arrangement of the tetraarylborato ligand with two interannularly niobium-bridged aryl rings. This new type of bonding is not restricted to the methyl-substituted (4a) or phenyl-substituted (4b) acetylenic derivatives: CO is also compatible with the new bonding arrangement. Alkyne displacement by CO gives the neutral covalent complex [Nb(CO)(η6-C6H4X)2B(C 6H4X)2] (X = H (6a), p-F (6b)). An X-ray diffractometric experiment on 6a has confirmed the novel bonding arrangement of the tetraarylborato ligand for this compound, which crystallizes in space group P212121 (No. 19) with four formula units in cells of dimensions a = 10.495(2) ?, b = 14.586(1) ?, and c = 17.174(3) ?.