ZfN: Search Results

1	Author	Z. Naturforsch	Requires cookie*
	Title	Zur Umsetzung von Bis(?75-cyclopentadienyl)dihydridowolfram mit Halogenboranen
	Reference	Z. Naturforsch. 51b, 1618—1620 (1996); eingegangen am 30. Mai 1996
	Published	1996
	Keywords	Bis(/;:'-cyclopentadienyl)tungstendihydride, Boranes, Alkylchloro, BisO^-cyclopentadienyl)-tungstentrihydride Borates
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	TEI-XML for	default:Reihe_B/51/ZNB-1996-51b-1618.pdf
	Identifier	ZNB-1996-51b-1618
	Volume	51

2	Author	Bernd Wrackmeyer	Requires cookie*
	Title	Vergleich zwischen n B-und 13 C-chemischen Verschiebungen dreifach koordinierter Borverbindungen und Carbenium-Ionen Comparison between n B and 13 C Chemical Shifts of Three-Coordinate Boron Compounds and Carbenium Ions
	Abstract	The relationship between U B chemical shifts (<5 n B) of trigonal boranes and 13 C® chemical shifts (<5 13 C®) of carbenium ions was found to be more complex than previously reported. The trends observed allow for the comparison of (pp) n bonding between boron and suitable substituents with the TT-charge derealization in carbenium ions. In case of the ferrocenyl boranes and ferrocenyl carbenium ions the markedly different trend in the shielding of 11 B and 13 C® favours a fulvene-like structure for the substituted cyclopenta-dienyl ring in the latter. Structural features are analogously reflected by <5 U B and d 13 C® data for both series of compounds. Comparison of <5 13 C data of organoboranes and carbe-nium ions can be useful in conformational studies. Einführung
	Reference	Z. Naturforsch. 35b, 439—446 (1980); eingegangen am 5. November/14. Dezember 1979
	Published	1980
	Keywords	Boranes, Carbenium Ions, 13 C NMR Spectra, U B NMR Spectra
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	TEI-XML for	default:Reihe_B/35/ZNB-1980-35b-0439.pdf
	Identifier	ZNB-1980-35b-0439
	Volume	35