Journal ArticleDOI
Molekül- und Kristallstruktur von Magnesium-bis[bis(trimethylsilyl)phosphanid] · DME
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TLDR
Magnesium bis[bis(trimethylsilyl)phosphide as discussed by the authors has been shown to have a trigonal pyramidal coordination, and it is distorted tetrahedrally surrounded by two oxygen and two phosphorus atoms with MgP-and MgO-bond lengths of 248.7 (2) and 204.7(5) pm, respectively.Abstract:
Magnesium-bis[bis(trimethylsilyl)phosphanid] · DME kristallisiert in der tetragonalen Raumgruppe I4c2 mit a = 1652,9(2); c = 2282,6(5) pm und Z = 8. Das Magnesiumatom ist von zwei Sauerstoff- und zwei Phosphoratomen mit MgP- und MgO-Bindungslangen von 248,7(2) bzw. 204,7(5) pm verzerrt tetraedrisch umgeben. Das Phosphoratom ist trigonal pyramidal koordiniert.
Molecular and Crystal Structure of Magnesium Bis[bis(trimethylsilyl)phosphide] · DME
Magnesium bis[bis(trimethylsilyl)phosphide] crystallizes in the tetragonal space group I4c2 with a = 1652.9(2); c = 2282.6(5) pm and Z = 8. The magnesium atom is distorted tetrahedrally surrounded by two oxygen and two phosphorus atoms with MgP- and MgO-bond lengths of 248.7(2) and 204.7(5) pm, respectively. The phosphorus atom displays a trigonal pyramidal coordination.read more
Citations
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Synthesis, properties, and reactivity of alkaline earth metal bis[bis(trialkylsilyl)amides]
TL;DR: In this paper, the dimeric alkaline earth metal bis[bis(trialkylsilyl)phosphanides] were given as the minimum structures according to ab initio calculations for calcium and strontium for gaseous [M(PH2)2]2, whereas for barium the structure of the type M(μ-PH 2)4Ba has to be considered.
Journal ArticleDOI
A Unique Barium−Carbon Bond: Mechanism of Formation and Crystallographic Characterization
TL;DR: In this paper, the reaction of tetrakis(tetrahydrofuran-O)barium bis[bis(trimethylsilyl)phosphanide] with diphenylbutadiyne yields dimeric 2,5-diphenyl-3-(1,4-dipsylbutene-3-yne-2-ide-...
Journal ArticleDOI
2,5-Diphenyl-3,4-bis(trimethylsilyl)-1-phosphacyclopentadienide as a Ligand at Calcium, Strontium, and Tin(II)
Matthias Westerhausen,Matthias H. Digeser,Heinrich Nöth,Werner Ponikwar,Thomas Seifert,Kurt Polborn +5 more
TL;DR: In this article, the addition of tetrakis(tetrahydrofuran)calcium or -strontium bis[bis(trimethylsilyl)phosphanide] with diphenylbutadiyne in toluene yields nearly quantitative amounts of slightly yellow tetra-furan (tetra)-calcium (1) and stannocenes (2,5-bis(tert-butyl)-1-azacyclopentadienide) (3).
Journal ArticleDOI
Coordination of arenes and phosphines by charge separated alkaline earth cations.
TL;DR: Although DFT analysis indicates that the polyhapto arene binding to Mg is effectively electrostatic in origin, the interactions with Ca are observed to invoke small but significant π overlap of the arene HOMOs with the alkaline earth valence nd orbitals.
Journal ArticleDOI
Parallels between the chemistry of alkoxo-phosphidecalcium(II) and ytterbium(II). Synthesis and crystal structure of a calcium alkoxo-phosphide cuboidal complex
TL;DR: In this paper, it was shown that 2 contains a Ca4O4 cuboidal core with μ2-phosphide groups bridging four of the faces of the cuboid.
References
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X-ray scattering factors computed from numerical Hartree–Fock wave functions
D. T. Cromer,J. B. Mann +1 more
TL;DR: In this paper, the Hartree-Fock wave function was used to compute X-ray scattering factors for neutral atoms from He to Lw and for most of the chemically significant ions through Lu3+ through Lu 3+.
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Journal ArticleDOI
Synthesis and chemistry of the bis(trimethylsilyl)amido bis-tetrahydrofuranates of the group 2 metals magnesium, calcium, strontium and barium. X-ray crystal structures of Mg[N(SiMe3)2]2·2THF and related Mn[N(SiMe3)2]2·2THF
Donald C. Bradley,Michael B. Hursthouse,Ali A. Ibrahim,K. M. Abdul Malik,Majid Motevalli,Reinhold Möseler,H. R. Powell,John D. Runnacles,Alice C. Sullivan +8 more
TL;DR: In this paper, the X-ray crystal structures of 1 and the related manganese compound Mn[N(SiMe3)2]2·2THF (5) are reported.
Journal ArticleDOI
Comparing the properties of homologous phosphido and amido complexes: synthesis and characterization of the disilylphosphido complexes {M[P(SiMe3)2]2}2 where M = zinc, cadmium, mercury, tin, lead and manganese
TL;DR: In this paper, a complex of empirical formula M[P(SiMe 3 ) 2 ] 2 was obtained in 68-90% yields from M[N(SiME 3 )2 ] 2 and HP[SiMe3 ] 2 (M=Zn (1), Cd (2), Hg, Sn, Pb, Mn (6)).
Book ChapterDOI
X-Ray Structural Analyses of Organomagnesium Compounds
Peter R. Markies,Otto S. Akkerman,Friedrich Bickelhaupt,Wilberth J. J. Smeets,Anthony L. Spek +4 more
TL;DR: In this paper, the X-ray structural analysis of organomagnesium compounds is discussed, and it is shown that the structure of simple Grignard or diorganylmagnesium compounds tend to form polymeric structures.