4-di(pentafluorophenyl)titanole. The latter product can also be obtained in 77% yield from a reaction between titanocene dicarbonyl and phenyl(pentafluorophenyl)acetylene in hexane solution. Application of 13CNMR spectroscopy to the structural elucidation of these and related metallacycles is discussed.
在回流的苯diphenyltitanocene和苯基(五氟苯基)乙炔之间的反应产生1,1-双(η 5 -环戊二烯基)-2-苯基-3-(五氟苯基),44%收率benzotitanole。用HCl / CHCl 3降解产物,得到二茂钛二氯化物和Z -1,2-二苯基-1-(五氟苯基)乙烯。diphenyltitanocene和苯基的反应(五氟苯基)乙炔苯下光解条件导致1,1-双(η的独家形成5 -环戊二烯基)-2,5-二苯基-3,4-二(五氟苯基)titanole。后者的产物也可以从二茂钛二羰基与苯基(五氟苯基)乙炔在己烷溶液中的反应中以77%的产率获得。应用13讨论了这些和相关金属环的结构解析的13 C NMR光谱学。
Dicarbonylbis(η-cyclopentadienyl)titanium(<scp>II</scp>) chemistry: reactions with organic molecules containing C–Cl, P–Cl, O–H, and S–Cl bonds; synthesis, properties, and structures of η-acyl derivatives of titanium(<scp>IV</scp>)
crystallographic mirror plane. The Ti atom has distorted tetrahedral co-ordination, and it interacts strongly with the oxygen of the acetyl group which acts as a bidentate three-electron ligand. This structure explains the observed low CO stretching frequency for the acyl unit. Reaction with MeSO2Cl resulted in insertion of the Ti(cp)2 unit into the S–Cl bond giving [Ti(cp)2(O2SMe)Cl]. Reactions of (1)
Synthetic and Electrochemical Studies on 1,1‘-Dithia-Substituted Derivatives of Ferrocene and Structure of 1,3-Dithia[3]ferrocenophane [Fe(C<sub>5</sub>H<sub>4</sub>S)<sub>2</sub>CH<sub>2</sub>]
fc(μ2-S)2TiCp2 (1, fc = 1,1‘-ferrocenyl, Cp = cyclopentadienyl) and fc(μ2-S2)(μ2-S)TiCp2 (2) were synthesized by reaction of fc(SH)2 with Cp2TiCl2, and from fcS3 and Cp2Ti(CO)2, respectively. The novel tetrasulfane fcS4 was obtained from 2 and SCl2. 1,3-Dithia[3]ferrocenophane fcS2CH2 was obtained from fc(SH)2 and CH2Cl2 in the presence of Cp2TiCl2 and KOH. The molecular and crystal structure of fcS2CH2 was
Titanocene complexes of ring-opened dibenzothiophene and related dimercaptobiaryl ligands
作者:Philip R Stafford、Thomas B Rauchfuss、Atul K Verma、Scott R Wilson
DOI:10.1016/s0022-328x(96)06581-3
日期:1996.12
derivatives resulting from the reactions of titanocene dichloride with derivatives of dinenzothiophene (DBT). Lithiumcleavage of DBT gives 2,2′-Li(LiS)C12H8 which reacts with (C5H5)2TiCl2 to give the metallacyclic complex (C5H5)2TiSC12H8 (1). Two side products were isolated in smaller amounts, the thiolates (C5H5)2Ti(SC6H4-2-Ph)2 (2) and (C5H5)2Ti(SC6H4-2-Ph)Cl. DNMR studies showed that 1 and its MeC5H4 analog
本文介绍了由二茂钛二氯化物与二烯并噻吩(DBT)衍生物反应制得的有机钛衍生物。DBT的锂裂解产生2,2'-Li(LiS)C 12 H 8,其与(C 5 H 5)2 TiCl 2反应,得到金属环配合物(C 5 H 5)2 TiSC 12 H 8(1)。分离了少量的两种副产物,硫醇盐(C 5 H 5)2 Ti(SC 6 H 4 -2-Ph)2(2)和(C 5H 5)2 Ti(SC 6 H 4 -2-Ph)Cl。DNMR研究表明1和它的MeC 5 H 4类似物3由于有机硫螯合物的折叠而在立体化学上是非刚性的。通过单晶X射线衍射确认了(MeC 5 H 4)2 TiSC 12 H 8的结构。该络合物由与环裂解的DBT的碳和硫配位的预期(MeC 5 H 4)2 Ti部分组成。尝试生成2,2'-Li(LiS)C 12 H 8通过在TMEDA存在下,将2-苯基苯硫醇与两个当量的BuLi进行双金属化,然后用(C
Preparation, characterization and reactivity of Cp2M(PMe3)2 complexes (M = Ti, Zr): the molecular structure of Cp2Zr(PMe3)2
magnesium in THF in the presence of PMe3 affords the complexes Cp2M(PMe3)2 in high yields. These compounds lose one or both PMe3 ligands under very mild conditions. Cp2Ti(PMe3)2 reacts readily with CH3I, CH3C(O)Cl, PhSSPh, Me2PCH2CH2PMe2, CO, RCN (R = Me, t-Bu) or (RN)2S (R = t-Bu, Me3Si) to give the corresponding titanocene products. The structure of Cp2Zr(PMe3)2 has been determined by X-ray diffraction;