Tantalum, tetrakis

A range of other cationic niobium and tantalum tetrakis(dithiocarbamate) complexes, [M(S2CNR R )4]X (M = Nb, Ta R = R = Me, f-Bu R = Me, R = I -Pr, Ph, Cy, Bz), have been prepared from the metal pentachlorides and anhydrous dithiocarbamate salts (719). They are fluxional on the NMR time scale, a polytopal mechanism being proposed via a cubic or square antiprismatic transition state. The kinetics of this process has been studied by total line shape analysis, giving AG values of 42-50 kJ moP. ... 

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... 

It has been involved in many industrial explosions. Explodes on contact with aluminum + barium nitrate + potassium nitrate + water. Forms explosive mixtures with aluminum powder + titanium dioxide, ethylene glycol (240°C), cotton lint (245°C), furfural (270°C), lactose, metal powders (e.g., aluminum, iron, magnesium, molybdenum, nickel, tantalum, titanium), sulfur, titanium hydride. Reaction with ethanol + heat forms the explosive ethyl perchlorate. Violent reaction or ignition under the proper conditions with aluminum + aluminum fluoride, barium chromate + mngsten or titanium, boron + magnesium + silicone rubber, ferrocenium diammine-tetrakis(thiocyanato-N) chromate(l —), potassium hexacyanocobaltate(3—), A1 +... 

Benzotrifluoride o-Chlorobenzotrifluoride p-Chlorobenzotrifluoride Dichlorotetrafluoroethane 1,2-Dichlorotetrafluoroethane Dimethicone Propionitrile Tetra-n-butoxysilane 1,2,3,4-Tetrachlorobenzene Tetrakis (2-ethylbutoxy) silane Tetrakis (2-ethylhexoxy) silane 1,3,5-Trichlorobenzene dielectric fluid, switch gears PerfIuorodecalin PerfIuoromethyldecalin dielectric fluid, transformers PerfI uorodecal i n PerfI uoromethyl decal i n dielectric gas Chloropentafluoroethane dielectric insulator, high-voltage cables Polyethylene, crosslinked dielectric layers in electronic circuits Tantalum oxide dielectric liquid Di butyl sebacate dielectric oils Silicone dielectrics... 

Attempts to prepare niobium pentakis(trimethylsiloxide) by the reaction of Nb(OEt)s with MesSiOH did not yield the expected product instead the sublimed (in vacuo) material corresponded in analysis to [Nb(0SiMe3)4]20. As compared to nonvolatile titanium tetrakis(triphenysiloxide), the trimethylsiloxide derivatives of titanium and zirconium as well as tantalum pentakis(trimethylsiloxide) could be purified in vacuo by either distillation or sublimation. ... 

Cl gH32Lii,04W2 4.8 CH3 3.2 Cl, Tetralithium trichloropentamethyl-ditungsten - tetrakis(tetrahydrofuran), 44B, 710 Cl6H38ClgP2Ta2, Di-M chloro-bis(dichloro-trimethylphosphine-neopen-tylidene-tantalum), 45B, 848... 

Ci2H22ClnHg2N2Sft, Di-/i-chloro-dichlorobis(methyl pyrrolidine-1-car-bodithioate)dimercury(II), 40B, 846 Cl2H2ftCl6NaSBTa2 0,5 CH2CI2, Tetrakis(N,N-dimethyldithiocarbam-ato)tantalum(V) hexachlorotantalate(V) - hemidichloromethane, 42B, 768... 

Cl3H2sClaN SBTa, Tetrakis(N,N-dimethyldithiocarbamato)tantalum(V) chloride - dichloromethane, 42B, 768 Cl4H7Fe2N07S, /i (N-p-Tolymonothiocarbamato)-bis(tricarbonyliron), 45B, 1168... 

C2 eHft 2AsNsNiS2, Diisothiocyanato-(N,N-bis-(2-diethylaminoethyl)-2-diphenylarsino-ethylamine-N,N,N)-nickel(II), 37B, 555 C2 bHi, ftClgCuuNftOs Solvent, M4-Oxo-hexa-/Li chloro-tetrakis((3-quinuclidinone)copper(II)) solvent, 43B, 1331 C2 8H5 oCl3N4Ta, Trichlorobis(N,N -dicyclohexylacetamidinato)-tantalum(V), 41B, 1132... 

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