Synthese und Kristallstruktur von MoCl 4 (DME) · 15-Krone-5 und MoCl 4 (DME) (DME = 1,2-Dimethoxyethan) / Synthesis and Crystal Structure of MoCl 4 (DME) · 15-Crown-5 and MoCl 4 (DME) (DME = 1,2-Dimethoxyethane)

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Synthese und Kristallstruktur von MoCl 4 (DME) · 15-Krone-5 und MoCl 4 (DME) (DME = 1,2-Dimethoxyethan) / Synthesis and Crystal Structure of MoCl 4 (DME) · 15-Crown-5 and MoCl 4 (DME) (DME = 1,2-Dimethoxyethane)

1991; De Gruyter; Volume: 46; Issue: 3 Linguagem: Inglês

10.1515/znb-1991-0310

ISSN

1865-7117

Autores

Evamarie Hey‐Hawkins, Hans Georg̀ von Schnering,

Tópico(s)

Metal complexes synthesis and properties

Resumo

NaSi reacts with MoCl 5 and 15-crown-5 in toluene with reduction of Mo(V) to Mo(IV). Work-up in DME yields MoCl 4 (DME)· 15-crown-5 (1). MoCl 4 (DME) (2) is prepared more conveniently from MoCl 5 /DME. 1 and 2 were characterized spectroscopically and by X-ray structure determination. Crystal data: 1, space group P2 1 2 1 2 1 (No. 19), Z = 4, 2765 observed independent reflexions, R = 0.026, cell dimensions (110 K): a = 16.292(4), b = 12.884(3), c = 10.452(2) Å. 2, space group I4̄2d (No. 122), Z = 8, 558 observed independent reflexions, R = 0.037, cell dimensions (292 K): a = b = 9.562(2), c = 23.777(6)Å. The MoCl 4 (DME) molecule of 1 and 2 forms a distorted octahedron. There are four non-coordinating 15-crown-5 molecules present in the unit cell of 1. The UV/VIS spectrum and the magnetic properties of 2 are discussed.

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Synthese und Kristallstruktur von MoCl 4 (DME) · 15-Krone-5 und MoCl 4 (DME) (DME = 1,2-Dimethoxyethan) / Synthesis and Crystal Structure of MoCl 4 (DME) · 15-Crown-5 and MoCl 4 (DME) (DME = 1,2-Dimethoxyethane)