Thallium tris borate

Thallium tris(3-mesitylpyrazol-l-yl)borate and [(j -cod)2RhCl] produce [(ry -TpORhfjj -cod)] (93IC3471). These complexes appeared to be good catalysts... 

P3BTIC45H41, Thallium, phenyltris(diphenyl-phosphinomethyl)borate, 34 12 P4Br2MoO4C36H30, Molybdenum(Vl), bis(tri-phenylphosphineoxide)dibromodioxo-, 34 53... 

Anionic, tridentate tris(mercaptoimidazolyl)borates [Tm ] systems are useful for isolation of T1(III) complexes. " " Six-coordinate, sandwich complexes [Tm ]2Tl C104, Tm ]2 T1)I (102), and Tm ]2Tl Tll4 have been synthesized and structurally characterized. The compound Tm ]2T1 I has been isolated as a by-product during the synthesis of a tris(mercaptoimidazolyl)boratozinc complex using a thallium(I) starting material [Tm lTl. " " r.f... 

The tris(pyrazolyl)boratothallium(I) compounds are the most widely studied among thallium poly(pyrazolyl)borates. An excellent recent review article has appeared that covers the synthesis, structures, properties, and applications of tris(pyrazolyl)boratothallium(I). ... 

As with bis(pyrazolyl)borates, the synthesis of Tl(I) complexes involves the metathesis reaction between an alkali-metal tris(pyrazolyl)borate and a thallium salt. The triptycyl-substituted complex [HB(3-(9-triptycyl)Pz)3]Tl has been synthesized from the reaction between [H2B(3-(9-tripty-cyl)Pz)2]Tl and 3-(9-triptycyl)PzH at 170 °C. A promising, much milder route involving TlOEt is also available. The reaction of RBBr2 (R = Me, cymentrenyl (Cym), methylcymentrenyl (Cym ),... 

A tris(imidazolyl)borate (138) complex of thallium(I) has been synthesized.The solid-state structure of hydrotris(imidazolyl)boratothallium(I) consists of one-dimensional, twisted, ladderlike strands, and three-coordinate thallium centers. Due to the position of the nitrogen donors, the tris(imidazolyl)borate ligand is not capable of forming metal chelates as are observed in tris(pyrazolyl)borates. Poly(benzotriazolyl)borate ligands have some features of both tris(pyrazo-lyl)borate and tris(imidazolyl)borate systems. Thallium(I) complexes of bis-, tris-, and tetrakis (benzotriazolyl)borates are reported. These adducts have been synthesized by treating the corresponding potassium derivative with an equimolar quantity of thallium(I) formate. ... 

Coordination compounds containing thallium(I) and heavier group 15 elements are rare. Synthesis of a tris(phosphino)borate thallium adduct has been reported. The reaction between [PhB(CH2PPh2)3]Li(TMEDA) and TlPFe affords [PhB(CH2PPh2)3]Tl (140) as a yellow powder. The P NMR spectrum shows two doublets with /xi p of 5,214Hz and 5,168 Hz, as a result of... 

Recently, a series of bis- and tris(mercaptoimidazolyl)borate ligands [Bm and ffm ] , as well as tris(mercaptothiazolyl)borate [Tz], tris(mercaptobenzothiazolyl)borate [Tbz], and bis(mer-captoimidazolyl)(pyrazolyl)hydroborato [PzBm ], ligands and their thallium(I) derivatives have been synthesized and characterized. " The bis(mercaptoimidazolyl)(pyrazolyl)hydroborato represents a hybrid [S2N] system. 

Reaction of MeBBr2 with pyrazoles in the presence of TIOEt and NEt3 yields the tris(pyrazolyl)borate thallium salts [Tl(MeTpx)j (Tpx = Tp, Tp or TpMe). In [Tl(MeTp )j a bridging bidentate coordination of MeTp is found, which has been explained as sterically enforced, on the basis of a comparison between the structure of [Tl(MeTp )] and [Tl(MeTpMe)].132... 

Historically, almost every chemical or compound known to be toxic has been tried and used to inhibit the action of wood-destroying pests. Among the many chemicals used as wood preservatives are compounds based on creosote, mercury, arsenic, thallium, borate, cyanide, chromium, copper, zinc, nickel, fluorides, and pentachlorophenol. The majority fall into 3 classes ... 

VcTi couplings between ca. 40 and 65 Hz and Vcti couplings between ca. 35 and 60 Hz have been measured by Claramunt et al. in the solid state C NMR spectra of some thallium (I) tris-(pyrazol-l-yl)borates (thallium scorpionates). 

Very large C(4)-H T1 couplings between the C(4) atom of a pyrazole fragment and the nearest thallium atom of another molecule have been observed by Claramunt et in the solid state spectra of thallium (I) tris-pyrazol-1-yl)borates (thallium scorpionates). They varied between 194 and 282 Hz and disappeared in solution, which seems to confirm their rather unusual origin. A related observation has been reported by Janiak and co-workers in the case of a molecular Cj(CH2Ph)5Tl complex in solution where the orfo-phenyl carbon also shows an unusually large C-Tl coupling of 43 Hz. 

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