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Beryllium-Free β-Rb2 Al2 B2 O7 as a Possible Deep-Ultraviolet Nonlinear Optical Material Replacement for KBe2 BO3 F2

T Thao Tran1, Nathan Z Koocher2, James M Rondinelli2

  • 1Department of Chemistry, University of Houston, 112 Fleming Building, Houston, TX, 77204-5003, USA.

Angewandte Chemie (International Ed. in English)
|February 1, 2017
PubMed

Keywords:
boratesnonlinear opticspolymorphssecond harmonic generationsolid-state structures

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The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
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Radical substitution reactions can be used to remove functional groups from molecules. The hydrogenolysis of alkyl halides is one such reaction, where the weak Sn–H bond in tributyltin hydride reacts with alkyl halides to form alkanes. Here, the reagent Bu3SnH yields tributyltin halide as a byproduct.
The bonds formed in this reaction are stronger than the bonds broken, making it energetically favorable. The reaction follows a radical chain mechanism similar to radical halogenation reactions,...