20693-69-0

Basic information

• Product Name: 2,4-Dicarbaheptaborane(7)
• Synonyms: NSC 289902;closo-2,4-Dicarbaheptaborane; closo-2,4-Dicarbaheptaborane(7)
• CAS NO: 20693-69-0
• Molecular Formula: C2H7 B5
• Molecular Weight: 85.1326
• Mol File: 20693-69-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,4-Dicarbaheptaborane(7)(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-Dicarbaheptaborane(7)(20693-69-0)
• EPA Substance Registry System: 2,4-Dicarbaheptaborane(7)(20693-69-0)

Safety Data

• Hazardous Substances Data: 20693-69-0(Hazardous Substances Data)

Usage

General Description

2,4-Dicarbaheptaborane(7) is a chemical compound with the molecular formula B7H14. It is a borane cluster compound composed of boron and hydrogen atoms. 2,4-Dicarbaheptaborane(7) is stable and highly soluble in a variety of organic solvents, and it is known for its ability to react with a wide range of other chemicals. 2,4-Dicarbaheptaborane(7) is primarily used as a building block in the synthesis of various organoborane compounds and as a reagent in organic chemistry reactions. It also has potential applications in the fields of materials science and as a precursor to other boron-based compounds. However, it is important to handle this compound with caution, as it is toxic and can be hazardous if not properly handled.

Upstream product

• 142533-44-6 nido-4,5-C₂B₆H₁₀ 
• 18972-20-8 2,3-dicarba-nido-hexaborane⁽⁸⁾ 
• 7440-21-3 monosilane 

Downstream Products

• 105930-52-7 3-C₆H₅-closo-2,4-C₂B₅H₆ 
• 105930-53-8 5-C₆H₅-closo-2,4-C₂B₅H₆ 
• 28347-92-4 5-Cl-closo-2,4-C₂B₅H₆ 
• 10294-34-5 boron trichloride 
• 150-46-9 triethyl borate 
• 1333-74-0 hydrogen 
• 11113-50-1 boric acid 
• 33616-59-0 2-chloro-1,6-C₂B₄H₅ 
• 71849-87-1 (Cl)2C₂B₄H₄ 
• 7318-78-7 dichloro-methyl-borane 
• 40710-68-7 1,1-bis(dichloroboryl)methane 

Relevant articles and documents

Synthesis and structural studies of subicosahedral adjacent-carbon carboranes

Synthesis and structural studies, employing combined NMR, X-ray crystallographic, and ab initio/IGLO/NMR methods, of a variety of new subicosahedral carboranes with adjacent cage carbons are reported. Acetonitrile-induced cage degradation of arachno-4,5-C2B7H12- gave nido-4,5-C2B6H9-(1-) in nearly quantitative yield, which can then be protonated to give the neutral carborane nido-4,5-C2B6H10 (1) in good yield. Both of these nido electroncount clusters are shown to have an arachno-type geometry, i.e. a six-membered open face. The nido-4,5-C2B6H10 (1) hydroborated alkenes or alkynes which following deprotonation gave nido-7-R-4,5-C2B6H8- (2a--c-) ions. Both nido-4,5-C2B6H9- (1-) and nido-4,5-C2B6H10 (1) serve as useful precursors to other adjacent cage-carbon clusters. Thus, nido-4,5-C2B6H9- (1-) reacted with BH3·THF to give arachno-5,6-C2B7H12- (3-) which a single-crystal X-ray diffraction study showed is the first carborane to adopt the n-B9H15 cage geometry. Thermal or chemical degradation of nido-4,5-C2B6H10 (1) gave closo-2,3-C2B5H7 (5) in good to moderate yields. The nido-4,5-C2B6H9- (1-) was also found prone to lose a cage boron as evidenced by its reactions with (η-C5H5)Co(CO)12 and (η6-C6Me6)2Ru2Cl4 which gave closo-3,1,2-(η-C5H5)CoC2B5H7 (6) and closo-3,1,2-(η6-C6Me6)RuC2B5H7 (7), respectively. NMR studies showed the nido-4,5-C2B6H10 (1) was converted to arachno-4,5-C2B6H11- by reaction with LiEt3BH, and an alkyl derivative, arachno-7-CH3-4,5-C2B6H10- (4-), was formed by reacting MeLi with nido-4,5-C2B6H9- (1-) followed by protonation. The closo-2,3-C2B5H7 (5) was also converted in high yields to the smaller nido carborane, nido-2,3-C2B4H8, via reaction with TMEDA/H2O, and to nido-3,4-C2B5H8- (8-) by reaction with LiEt3BH.