Tetrakis perchlorate

The formation of ethers such as 1806 by EtsSiH 84b can also be catalyzed by trityl perchlorate to convert, e.g., benzaldehyde in 84% yield into dibenzyl ether 1817 [48]. The combination of methyl phenethyl ketone 1813 with O-silylated 3-phenyl-n-pro-panol 1818, in the presence of trityl perchlorate, leads to the mixed ether 1819 in 68% yield [48] (Scheme 12.15). Instead of trityl perchlorate, the combination of trityl chloride with MesSiH 84a or EtsSiH 84b and sodium tetrakis[3,5-bis-(trifluoro-methyl)phenyl]borane as catalyst reduces carbonyl groups to ethers or olefins [49]. Employing TMSOTf 20 as catalyst gives very high yields of ethers. Thus benzaldehyde reacts with O-silylated allyl alcohol or O-silylated cyclohexanol to give the... 

Ferrocenyltriphenylphosphonium perchlorate (84) has been synthesized from iodoferrocene, tetrakis(acetonitrile)copper(i), and triphenylphosphine in nitromethane. The authors suggest that iodoferrocene first forms the complex (85) which then breaks down via a four-centred transition state to (84). 

Tetrakis(/i3-2-amino-2-methylpropanolato)tetrakis(/i2-2.amino-2-methylpropanolato)hexacopper(II) perchlorate... 

Table 1. Common materials used in quenched-fluorescence oxygen sensing (Ru(dpp)3(C104)2 tris(diphenylphenantroline) ruthenium(II) perchlorate PtOEPK platinum(II)-octaethyl-porphine-ketone PtPFPP platinum(II)-tetrakis(pentafluorophenyl)porphine PS.poly(styrene), PSu poly(sulfone) PSB poly(styrene-butadiene) block co-polymer PVC polyvinylchloride) APET amorphous poly(ethyleneterephthalate) PE poly(ethylene).

Tetraamminehydroxynitratoplatinum(IV) nitrate, 4594 Tetraamminepalladium(II) nitrate, 4588 Tetraamminezinc peroxodisulfate, 4586 l,4,8,ll-Tetraazacyclotetradecanenickel(II) perchlorate, 3376 Tctrakis(/j.3-2-amiiio-2-methylpropanolato)tetrakis(//2-2.aniiiio-2-methylpropanolato)hexacopper(II) perchlorate, 3883 Tetrakis(3-methylpyrazole)cadmium sulfate, 3716 Tetrakis(3-methylpyrazole)manganese(II) sulfate, 3717 Tctrakis(4-/V-nicthylpyridinio)porphinecobalt(III)(5 +) perchlorate, 3908 Tetrakis(4-iV-methylpyridinio)porphineiron(III)(5+) perchlorate, 3909 Tetrakis(pyrazole)manganese(II) sulfate, 3538... 

Tetrakis(thiourea)manganese(II) perchlorate, 1785 Triamminenitratoplatinum(II) nitrate, 4582 Triamminetrinitrocobalt(III), 4204... 

Potassium chlorate Metal phosphinates, 4017 Potassium perchlorate, 4018 Sodium 5-azidotetrazolide, 0551 Sodium chlorate Paper, Static electricity, 4039 Sodium chlorate Wood, 4039 Succinoyl diazide, 1438 Tetrakis(chloroethynyl)silane, 2879 Thianthrenium perchlorate, 3455 Triferrocenylcyclopropenium perchlorate, 3885 See other IGNITION SOURCES... 

Tetra(3-aminopropanethiolato)trimercury perchlorate, 3582 Tetrakis(hydroxymercurio)methane, 0471 Trimercury tetraphosphide, 4616... 

Probably, the first series of lanthanide complexes with neutral oxygen donor ligands is that of AP with the lanthanide nitrates. In 1913, Kolb (79) reported tris-AP complexes with lighter lanthanide nitrates and tetrakis-AP complexes with heavier lanthanide nitrates. Subsequently, complexes of lanthanide nitrates with AP which have a L M of 6 1 and 3 1 have also been prepared (80-82). Bhandary et al. (83) have recently shown through an X-ray crystal and molecular structure study of Nd(AP)3(N03)3 that all the nitrates are bidentate and hence the coordination number for Nd(III) is nine in this complex. Complexes of AP with lanthanide perchlorates (81, 84), iodides (81, 85), and isothiocyanates (66, 86, 87) are known. While the perchlorates and iodides in the respective complexes remain ionic, two of the isothiocyanates are coordinated in the corresponding complexes of AP with lanthanide isothiocyanates. 

The reactions of lanthanide thiocyanates, nitrates, and chlorides with TPPO have been studied by Cousins and Hart (202, 203, 205). The reactions of lanthanide nitrates with TPPO in ethanol, acetone, ethylacetate and tetrahydrofuran are given in Fig. 1. The nature of the complexes isolated depends on the concentrations of the ligand and the metal ion, temperature of mixing, presence or absence of the seed of the desired complex, size of the cation, and the nature of the solvent. Tetrakis-TPPO complexes of Ce(III) and Nd(III) perchlorates have been reported (206, 207). Two of the perchlorates are coordinated to the metal ion in these complexes. 

Vicentini and Dunstan (227) have obtained tetrakis-DDPA complexes with lanthanide perchlorates in which the perchlorate groups are shown to be coordinated to the metal ion. DDPA also yields complexes with lanthanide isothiocyanates (228) and nitrates (229). All the anions in these complexes are coordinated. DPPM behaves more or less like DDPA which is reflected in the stoichiometry of the complexes of DPPM with lanthanide perchlorates (230), nitrates, and isothiocyanates (231). Hexakis-DMMP complexes of lanthanide perchlorates were recently reported by Mikulski et al. (210). One of the perchlorate groups is coordinated to the metal ion in the lighter lanthanide complexes, and in the heavier ones all the perchlorate groups are ionic. 

Since 1972, complexes of lanthanides with cyclic sulfoxides have received considerable attention. Zinner and Vicentini (261) have reported the complexes of lanthanide perchlorates with TMSO. The L M in these complexes decreases along the lanthanide series. But in the case of complexes of lanthanide chlorides with TMSO, the L M increases from 2 1 for the lighter lanthanides to 3 1 for the heavier lanthanides (262). It has been suggested that these complexes, especially the bis-TMSO complexes, contain bridging chloride ions. Tetrakis-TMSO complexes with lanthanide isothiocyanates have also been reported (263). 

The structure of di-p-oxo-tetrakis(bipyridyl)dimanganese(iii,iv)perchlorate monohydrate has been determined. The cation contains Mn and Mn bridged by two oxygen atoms. The two manganese atoms are unmistakeably different, smaller bond lengths being observed around the Mn ion. ... 

Potassium cyanide-potassiiun nitrite, 0527 Potassium pentacyanodiperoxochromate(5-), 1810 Potassiiun tricyanodiperoxochromate(3-), 1044 Tetrahydroxotritin(2+) nitrate, 4525 Tetrakis(hydroxymethyl)phosphonium nitrate, 1754 Tin(ll) nitrate, 4750 Tin(ll) perchlorate, 4109 Trihydrazinealuminium perchlorate, 0064 Trimethylhydroxylammonium perchlorate, 1323 Triphenylphosphine oxide hydrogen peroxidate, 3755 OXYGEN BALANCE DRUMS... 

NgC 1 iH 12, Bis(pyrazol-1 -y 1)(N-methylimidazol-2-yl)methane, (pz)2(mim)CH, 34 33 N6CI2RUC72H48, Ruthenium(II), tris(4,7-diphe-nyl-l,10-phenantroline)-, chloride, 34 66 N6ClgNd405gCigH66, Neodymium(lll), tetrakis-( 3-hydroxo) hexaalaninedecaaquatetra-, perchlorate, 34 184... 

Ring expansion of cyclic ketonesA new method for expansion of cyclic ketones to the expanded a-dithioketals involves addition of (CH3S)sCLi followed by treatment of the adduct with tetrakis(acetonitrile)coppcr(l) perchlorate or tetra-fluorohnrutc.2... 

Much coordination chemistry has been carried out with simple pyrimidines and the nucleic acid bases. The crystal structure566 of tetrakis(l-methyl-pyrimidine-2-thione)zinc(II) perchlorate bis(propanone) demonstrates unidentate coordination by the non-methylated (N-3) nitrogen atom, with r(Zn—N) at 2.058 and 2.060 A. The structure of dichlorobis(l-methylcytosine)cadraium(II)567 involves two Cd—Q bonds (2.497 and 2.485 A) and two Cd—N(3) bonds (2.281 and 2.296 A) with approximately tetrahedral stereochemistry. 

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