22428-64-4

Basic information

• Product Name: Phosphine oxide, 1,2-ethynediylbis[diphenyl-
• CAS NO: 22428-64-4
• Molecular Formula: C26H20O2P2
• Molecular Weight: 426.391
• Mol File: 22428-64-4.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: Phosphine oxide, 1,2-ethynediylbis[diphenyl-(CAS DataBase Reference)
• NIST Chemistry Reference: Phosphine oxide, 1,2-ethynediylbis[diphenyl-(22428-64-4)
• EPA Substance Registry System: Phosphine oxide, 1,2-ethynediylbis[diphenyl-(22428-64-4)

Safety Data

• Hazardous Substances Data: 22428-64-4(Hazardous Substances Data)

Upstream product

• 1334580-14-1 meso-2,2'-bis(diphenylphosphinoyl)-3,3'-dimethylbi-2H-azirin-2-yl 
• 1663-45-2 1,2-bis-(diphenylphosphino)ethane 
• 5112-95-8 bis(diphenylphosphino)acetylene 

Downstream Products

• 78605-35-3 1,2-phenylenebis(diphenylphosphine oxide) 
• 152434-72-5 9,10-dihydro-9,10-ethenoanthracene-11,12-bis(diphenylphosphine oxide) 
• 83341-06-4 2-(1,3-Diphenyl-2-imidazolidinyliden)-4,5-bis(diphenylphosphoryl)-1,3-dithiol 
• 309959-88-4 4,5-Bis(diphenylphosphinoyl)-1,2,3-triazole 
• 1220126-09-9 2,3-bis(diphenylphosphinyl)-1-methylindole 
• 5112-95-8 bis(diphenylphosphino)acetylene 

Relevant articles and documents

Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength-Dependent Multicolor Luminescence

First examples of luminescent MnII thiocyanate complexes are presented. A series of such compounds has been synthesized via the reaction of Mn(NCS)2 with bis(phosphine oxides), Ph2P(O)–X–(O)PPh2, where X = CH2 (L1), CH2CH2 (L2), CH2CH2CH2 (L3), CH2C(=CH2)CH2 (L4), C(=CH2)C(=CH2) (L5) and C≡C (L6). The L1, L3 and L4 ligands, when reacted with Mn(NCS)2 on air (EtOH/acetone, r.t.), produce chelate complexes [MnII(O^O)2(NCS)2]. Under similar conditions, L5 gives ionic complex [MnII(L5)3][MnII(NCS)4], whereas L6 affords chain coordination polymer (CP) [MnII(L6)2(NCS)2]n. By contrast, ligand L2 results in formation of mixed-valent chain CP [MnIIMnIII(L2)3(NCS)5]n. Complex [Mn(L4)2(NCS)2] and CP [Mn(L6)2(NCS)2]n display unique dual luminescence, i.e. the intraligand fluorescence (blue band) and MnII-centered phosphorescence (red band), the ratio of which is largely modulated by excitation wavelength. Through this feature, the luminescence color of these complexes can be smoothly tuned from deep-blue to red. Complex [Mn(L5)3][Mn(NCS)4] shows MnII-based phosphorescence only.

Experimental and theoretical characterization of the aromatization, epimerization, and fragmentation reactions of Bi-2H-azirin-2-yls prepared from 1,4-diazidobuta-1,3-dienes

1,4-Diazidobuta-1,3-dienes (Z,Z)-10, 17, and 21 were photolyzed and thermolyzed to yield the pyridazines 13, 20, and 23, respectively. To explain these aromatic final products, the generation of highly strained bi-2H-azirin-2-yls 12, 19, and 22 and their