Tetrakis thorium

Thorium, tetrakis(4,4,4-trifluoro-l-thienyl-l, 3-butanedione)(trioctylphosphine oxide)-structure, 1, 98 Thorium, triaquatetranitrato-structure, 1, 99... 

There is Httie known chemistry of tetrakis-Cp thorium complexes. Pseudotetrahedral molecules, (rj-ring) Tb (15), where ring = Cp [1298-75-5] or Ind [11133-17-6], have a measurable dipole, resulting from deviation of symmetry (88). Difference of coordination environments, eg, v] in the indenyl system and in the Cp system, appears to indicate great steric crowding about the thorium center, which probably limits the reactivity and synthetic derivatization of these complexes. 

Thorium, (dimethylformamide)tetrakis(tropolone)-structure, 1, 98 Thorium, hexanitrato-structure, 1,101 Thorium, pentacarbonato-stereochcmistry, I, 99 Thorium, tetrachlorobis(octamethylpyro-phosphoramide)-structure, 1, 89... 

Gennamiun(II) sulfide, 4419 Goldail) sulfide, 0116 Iron disulfide, 4401 lron(ll) sulfide, 4400 lron(lll) sulfide, 4404 Manganese(ll) sulfide, 4706 Manganese(lV) sulfide, 4707 Merciuy(ll) sulfide, 4607 Molybdemun(lV) sulfide, 4719 Potassium sulfide, 4670 Rhenium(Vll) sulfide, 4891 Ruthenimn(lV) sulfide, 4895 Samarium sulfide, 4899 Silver sulfide, 0026 Sodimn disulfide, 4812 Sodimn polysulfide, 4813 Sodimn sulfide, 4811 Strontimn sulfide, 4901 Tantalum(lV) sulfide, 4903 Tetrakis(butylthio)uranimn, 3731 Thorium oxide sulfide, 4826 Tin(II) sulfide, 4900 Tin(IV) sulfide, 4902 Titaniiun(IV) sulfide, 4904 Uranium(IV) sulfide, 4905 Zirconium oxide sulfide, 4827... 

Tetrakis(indenyl)thorium(rV), Th(C9H7)4, is known and well characterized. As depicted in (11), the thorium is bonded to carbons of the five-membered ring of the indenyl ligand, albeit not in an fashion. The shortest thorium-carbon... 

Tetrakis(allyl) complexes of thorium and uranium have been synthesized via the addition of allyl Grignard to the metal tetrachloride (equation 43). Alkyl-substituted allyl... 

Thus the structures of tetrakis(N-isopropyl-3,3-dimethylbutano-and -2,2-dimethylpropano)hydroxamatothorium(IV) have been determined by single crystal X-ray diffraction (77). Keeping the pH as low as possible, these compounds precipitate upon the addition of an aqueous solution of thorium tetrachloride to an aqueous solution of the sodium salt of the hydroxamic acid. The analogous uranium(IV) complexes were prepared similarly under an inert atmosphere using deaerated solvents. In addition to their hydrocarbon solubility, the bulky alkyl substituents impart other interesting properties to these complexes. They melt at 127-8 and 116-7°C and, under a vacuum of 10 3 torr, sublime at 95 and 100°C, respectively ... 

Si2C,4H26, Benzene. I.2-bis[(trimethyl-silyl)methyl]-, 26 148 Si2C2(H44, Disilene, tetrakis(2,4,6-tri-methylphenyl)-, 29 19,21 Si2Cl2ThC22H42, Thorium(IV), bis(Ti l,3-bis(trimethylsilyl)cyclopentadienylldi-... 

ThCl4, Thorium tetrachloride, 28 322 TiClC oH,o, Titanium(IlI), chlorobis(ii -cyclopentadienyl)-, 28 261 TiCljCjoHj, Titanium, dichlorobis(Ti -chlorocyclopentadienyl)-, 29-.200 TiN404oSiV3W,Cg,H,49,1,2,3-Trivanado-nonatungstosilicate(4—), pj-KV-cyclo-pentadienyl)trioxotitanate(rV)]-, A-fl-, tetrakis(tetrabutylammonium), 27 132 Ti02C,2H,o, Titanium, dicarbonylbis(ii -cyclopentadienyl)-, 28 250 TiOjC22H3o, Titanium, dicarbonylbis(ti -pentamethylcyclopentadienyl)-,... 

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