Strontium Chemistry with Silicone Grease

Harder S, Freitag B, Stegner P, Pahl J, Naglav D (2015)

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Publisher: Wiley-VCH Verlag

Book Volume: 641

Pages Range: 2129-2134

Journal Issue: 12-13

DOI: 10.1002/zaac.201500570

Abstract

Reaction of Sr(2-Me2N--Me3Si-benzyl)(2)(THF)(2) with one equivalent of DIPP(H)N-BH-N(H)DIPP (NBN-H-2, DIPP = 2,6-iPr-phenyl) gave the strontium bora-amidinate complex Sr(NBN)(THF)(4). Traces of silicone grease, however, can change the course of the reaction completely and gave the product {Sr[(DIPP)NSiMe2O]THF}(4) (1) in a ca. 25% yield. Complex 1 is a S-4 symmetric cluster with a Sr4O4 core and four chelating amide side arms. From the mother liquor a second product could be isolated: the dimeric cluster [Sr(NBN-SiMe2OSiMe2O)THF](2) (2). Whereas the synthesis of complex 2 is not reproducible, complex 1 can be prepared by deliberate addition of silicone grease. Also, it was found that Sr[N(SiMe3)(2)](2), 2,6-diisopropylphenyl and cyclic hexamethyltrisiloxane can be used as the reagents. For reactions with silicone grease, a mechanism, in which silicone precoordinates the central Sr atom followed by nucleophilic Si-O bond fission is proposed.

Authors with CRIS profile

Involved external institutions

Universität Duisburg-Essen (UDE) Germany (DE)

How to cite

APA:

Harder, S., Freitag, B., Stegner, P., Pahl, J., & Naglav, D. (2015). Strontium Chemistry with Silicone Grease. Zeitschrift für Anorganische und Allgemeine Chemie, 641(12-13), 2129-2134. https://dx.doi.org/10.1002/zaac.201500570

MLA:

Harder, Sjoerd, et al. "Strontium Chemistry with Silicone Grease." Zeitschrift für Anorganische und Allgemeine Chemie 641.12-13 (2015): 2129-2134.

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