Crystal structures of [N(C4H9)4][NbCl4OAlCl3] and [N(C3H7)4][NbCl6]

Blachnik, R.; Stumpf, K.; Reuter, Hans

doi:10.1524/zkri.2000.215.7.433

Cited by 4 publications

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References 6 publications

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“…38 Crystal data have been measured for [Pr 4 N][NbCl 6 ] and [Bu 4 N][NbCl 4 OAlCl 3 ]. 39 Reaction of aqueous Nb IV 2 S 4 with H 3 nta, followed by slow oxidation in air lead to complete desulfurisation to give K 2 [Nb 2 O 2 (m-OH) 2 (nta) 2 ]•4H 2 O; for which the crystal structure is reported. 40 For each of the complexes, [NbL 2 Cl 3 ], [CpNbLCl 3 ], [Cp*TaLCl 3 ], and [TaL(NMe 2 ) 4 ] (L = OC 6 HPh 2 -2,6-Bu t 2 -3,5), X-ray crystallography reveals an overall square pyramidal geometry with a basal aryloxide.…”

Section: Niobium and Tantalummentioning

confidence: 99%

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Malito

2001

Annu. Rep. Prog. Chem., Sect. A

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Section: Niobium and Tantalummentioning

confidence: 99%

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Malito

2001

Annu. Rep. Prog. Chem., Sect. A

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Density-functional computation of 93Nb NMR chemical shifts

Bühl

Wrackmeyer

2010

Magn. Reson. Chem.

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The (15)N and (13)C chemical shifts of 6-(fluoro, chloro, bromo, and iodo)purine 2'-deoxynucleoside derivatives in deuterated chloroform were measured. The (15)N chemical shifts were determined by the (1)H-(15)N HMBC method, and complete (15)N chemical-shift assignments were made with the aid of density functional theory (DFT) calculations. Inclusion of solvation effects significantly improved the precision of the calculations of (15)N chemical shifts. Halogen-substitution effects on the (15)N and (13)C chemical shifts of purine rings are discussed in the context of DFT results. The experimental coupling constants for (19)F interacting with (15)N and (13)C of the 6-fluoropurine 2-deoxynuleoside are compared with those from DFT calculations.

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The versatile chemistry of niobium pentachloride with aliphatic amines: Aminolysis, metal reduction and C–H activation

et al. 2015

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The reactions of NbCl5 with limited amounts (1-2 molar equivalents) of a series of primary, secondary and tertiary amines were investigated in dichloromethane as solvent. The 1:1 reaction of NbCl5 with NHEt2 cleanly afforded an equimolar mixture of [NbCl4(NEt2)]2, 1, and [NH2Et2][NbCl6], 2a; the former product constitutes the first example of structurally characterized Nb(V) chlorido-amido complex. The ammonium salts [NH3nPr][NbCl6], 2b, and [NH2iPr2][NbCl6], 2c, were isolated in 20-30% yields from the 1:1 reactions of NbCl5 with NH2nPr and NHiPr2, respectively. Cα-H bond activation and Nb(V) to Nb(IV) reduction took place in the reactions of NbCl5 with NR3 (R = Bz, Et; Bz = CH2Ph). The iminium salt [(PhCH2)2N=CHPh][NbCl6], 3, and the ammonium ion [NH(CH2Ph)3]+ were identified as the prevalent species generated from the 1:1 NbCl5/NBz3 interaction. [NHEt3][NbCl6], 4, and [NHEt3]2[NbCl6], 5, were isolated in moderate yields from, respectively, the 1:1 and 1:2 molar reactions of NbCl5 with NEt3. The solid state structures of 1, 2a, 3, 4 and 5 were ascertained by single crystal X-ray studies

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Crystal structures of [N(C₄H₉)₄][NbCl₄OAlCl₃] and [N(C₃H₇)₄][NbCl₆]

Abstract: [N(CBoth compounds crystallize in the space group P2

Cited by 4 publications

References 6 publications

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Density-functional computation of 93Nb NMR chemical shifts

The versatile chemistry of niobium pentachloride with aliphatic amines: Aminolysis, metal reduction and C–H activation

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