22428-64-4Relevant academic research and scientific papers
Manganese(II) Thiocyanate Complexes with Bis(phosphine Oxide) Ligands: Synthesis and Excitation Wavelength-Dependent Multicolor Luminescence
Artem'ev, Alexander V.,Bagryanskaya, Irina Yu.,Bauer, Irina A.,Brel, Valery K.,Davydova, Maria P.,Rakhmanova, Mariana I.
, (2020)
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.
The Trityl-Cation Mediated Phosphine Oxides Reduction
Landais, Yannick,Laye, Claire,Lusseau, Jonathan,Robert, Frédéric
supporting information, p. 3035 - 3043 (2021/05/10)
Reduction of phosphine oxides into the corresponding phosphines using PhSiH3 as a reducing agent and Ph3C+[B(C6F5)4]? as an initiator is described. The process is highly efficient, reducing a broad range of secondary and tertiary alkyl and arylphosphines, bearing various functional groups in generally good yields. The reaction is believed to proceed through the generation of a silyl cation, which reaction with the phosphine oxide provides a phosphonium salt, further reduced by the silane to afford the desired phosphine along with siloxanes. (Figure presented.).
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
Banert, Klaus,Koehler, Frank,Melzer, Antje,Scharf, Ingolf,Rheinwald, Gerd,Rueffer, Tobias,Lang, Heinrich,Herges, Rainer,Hess, Kirsten,Ghavtadze, Nugzar,Wuerthwein, Ernst-Ulrich
, p. 10071 - 10080 (2011/10/12)
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
A NOVEL SYNTHESIS OF 1,2-DIPHOSPSORYLBENZENES
Kyba, Even P.,Rines, Steven P.,Owens, Philip W.,Chou, Shang-Shing P.
, p. 1875 - 1878 (2007/10/02)
Synthesis of phosphorylchloroacetylenes, diphosphorylacetylenes and the Diels-Alder reactions of the latter to produce o-diphosphorylbenzenes are described.
