26621-57-8

Basic information

• Product Name: 1,3,2-Dioxaborolane, 2,2'-[1,4-butanediylbis(oxy)]bis[4,4,5,5-tetramethyl-
• CAS NO: 26621-57-8
• Molecular Formula: C18H36B2O6
• Molecular Weight: 370.102
• Mol File: 26621-57-8.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: 1,3,2-Dioxaborolane, 2,2'-[1,4-butanediylbis(oxy)]bis[4,4,5,5-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3,2-Dioxaborolane, 2,2'-[1,4-butanediylbis(oxy)]bis[4,4,5,5-tetramethyl-(26621-57-8)
• EPA Substance Registry System: 1,3,2-Dioxaborolane, 2,2'-[1,4-butanediylbis(oxy)]bis[4,4,5,5-tetramethyl-(26621-57-8)

Safety Data

• Hazardous Substances Data: 26621-57-8(Hazardous Substances Data)

Upstream product

• 25015-63-8 4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane 
• 1038-95-5 Tri(p-tolyl)phosphine 
• 12120-15-9 ethylenebis(triphenylphosphine)platinum⁽⁰⁾ 
• 73183-34-3 bis(pinacol)diborane 
• 76-09-5 2,3-dimethyl-2,3-butane diol 

Relevant articles and documents

Addition of boranes to (E)-(η5-C5H 5)2Zr(CH=CHPh)Cl

In this study, the addition of boranes to (E)-(η5-C 5H5)2Zr(CH=CHPh)Cl (3) has been examined in order to investigate the regioselectivity of these 'hydroboration' reactions. We have found that these additions proceed with remarkable selectivity to give exclusive formation of a saturated organic molecule where one carbon atom has both the boron and the zirconium fragments. These reactions do not proceed via a conventional hydroboration reaction, but instead go through an initial transmetalation step to generate (E)-(η5-C5H 5)2Zr(H)Cl (1) and the corresponding alkenyl boron intermediate, whereupon subsequent hydrozirconation of this latter species gives the geminal products. An x-ray diffraction study has been conducted on gem-(η5-C5H5)2Zr(CH(Bpin)CH 2Ph)Cl (pin = 1, 2-O2C2Me4) (2). Crystals of 2 were orthorhombic with a = 18.545(3) A, b = 15.713(3) A, c = 16.157(3) A in the space group Pccn. An x-ray diffraction study has also been conducted on the trinuclear zirconium oxide species (η5-C5H5)2ZrO 2[ZrCl(η5-C5H5) 2]2 (4). Crystals of 4 were orthorhombic with a = 13.6000(8) A, b = 14.2252(8) A, c = 17.6500(10) A in the space group P2(1)2(1)2(1). [Figure not available: see fulltext.]

Rhodium silyl boryl hydride complexes: Comparison of bonding and the rates of elimination of borane, silane, and dihydrogen

Spoilt for choice: a silane, dihydrogen, borane, or hydridoborate complex? The silyl boryl hydride complex [Cp*Rh(H2) (Et 3Si)(Bpin)] (Bpin = (pinacolato) boryl) could adopt any of these structures, but it appears to contain stronger B-H bonding than Si-H or H-H bonding and undergoes elimination of pinacolborane faster than of silane or hydrogen (see scheme). The bonding situation is studied by experimental and theoretical methods.