ZfN: Search Results

1	Author	JaapN. Louwen, RonaldR. Andréa, DerkJ. Stufkens, Ad Oskam	Requires cookie*
	Title	He(I) and He(II) Photoelectron Spectra of M[Co(CO)4]2 and M[Mn(CO)5]2 Complexes (M = Zn, Cd, and Hg)
	Abstract	The He(I) and He(II) photoelectron spectra of M[Co(CO)4]2 and M[Mn(CO)ö]2 complexes (M = Zn, Cd, Hg) are reported. Bands attributable to metal-metal bonds, metal d-levels and CO orbitals are assigned in agreement with a semi-ionic model, i.e. M 2+ and [M'(CO)"] -. Relativistic effects prove to be important in assigning these ultraviolet photoelectron spectra.
	Reference	Z. Naturforsch. 37b, 711—717 (1982); received January 26 1982
	Published	1982
	Keywords	Carbonyl Complexes, Metal-Metal Bonds, Mercury, Relativistic Effect
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	TEI-XML for	default:Reihe_B/37/ZNB-1982-37b-0711.pdf
	Identifier	ZNB-1982-37b-0711
	Volume	37

2	Author	KlausWilhelm Diemert, Kuchen, Jürgen Kutter	Requires cookie*
	Title	Meso-rac-Ph(X)P-(CH2>4-P(X)Ph-Liganden in Komplexen des Typs (CO)4Mas(L-L), Untersuchung der Stereoisomerie durch 31 P{ 1 H}-und "Cj 1 H}-NMR-Spektroskopie [1] Meso. rac-Ph(X)P-(CH2)4-P(X)Ph Ligands in Complexes of the Type (CO)4Mcw(L-L), Investigation of Stereoisomerism by 31 P{ 1 H} and 13 C{ 1 H} NMR Spectroscopy [1]
	Abstract	By reaction of M(CO)Ö (M = Cr, Mo, W) with the bifunctional aminophosphane Ph(NEt2)P-(CH2)4-P(NEt2)Ph (L-L) octahedral complexes (CO)4Mcw(L-L) are obtained. While it is shown by 31 P{ 1 H} NMR spectroscopy, that these complexes contain meso-and rac-(L-L) to a different extent, there is evidence from 13 C{ 1 H} NMR data obtained for the Mo complex, that the rac-ligand always prevails. As racemisation is observed when the Mo complex reacts with HBr to give (CO)4Mo-cis[Ph(Br)P-(CH2)4-P(Br)Ph] an SN 1 -mechanism is suggested for this reaction.
	Reference	Z. Naturforsch. 37b, 841—844 (1982); eingegangen am 15. Februar 1982
	Published	1982
	Keywords	Carbonyl Complexes, Bifunctional Chiral Phosphanes, Stereoisomerism
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	TEI-XML for	default:Reihe_B/37/ZNB-1982-37b-0841.pdf
	Identifier	ZNB-1982-37b-0841
	Volume	37