14467-94-8Relevant articles and documents
Synthesis and structural studies of diorganotin(IV)-based coordination polymers bearing silaalkylphosphonate ligands and their transformation into colloidal domains
Shankar, Ravi,Singla, Nisha,Asija, Meenal,Kociok-Koehn, Gabriele,Molloy, Kieran C.
, p. 6195 - 6203 (2014)
The contribution of silaalkylphosphonic acids Me3SiCH 2P(O)(OH)2 (1) and Me3SiC(CH3) 2P(O)(OH)2 (2) as ligands was demonstrated for the first time by the isolation of new diorganotin(IV) phosphonates Et2Sn{OP(O) (OH)CH2SiMe3}(OSO2Me) (3), (Et 2Sn)6{O3PC(CH3)2SiMe 3}4(OSO2Me)4 (4), and Et 2Sn(O3PCH2SiMe3) (5). X-ray crystallographic studies of 1-4 are presented. The structures of 1 and 2 adopt extended motifs by virtue of P-OH···O=P-type hydrogen bonding interactions. The molecular structure of 3 is composed of a dimer formed by bridging hydrogen phosphonate groups, while the sulfonate group appended on each tin atom acts in a μ2-bridging mode to afford the formation of one-dimensional coordination polymer featuring alternate eight-membered [-Sn-O-P-O-]2 and [-Sn-O-S-O-]2 rings. The asymmetric unit of 4 is composed of two crystallographically unique trinuclear tin phosphonate clusters with a Sn3(μ3-PO3)2 core linked together by coordinative association of a μ2-sulfonate group, while the remaining sulfonates are involved in the construction of a two-dimensional self-assembly. The identity of 1-5 in solution was established by IR and multinuclear (1H, 13C, 31P, 119Sn) NMR spectroscopy. The presence of silaalkyl group in 5 imparts unusual solubility in hydrocarbon, aromatic, and ether solvents. As a consequence, the formation of colloidal particles of 5 featuring rodlike morphology was achieved by ultrasonication of a solution in ethanol-chloroform mixture.
Reaction of C-silyl-P-chloro-alkylidenephosphoranes with carbonyl compounds
Kolodiazhna, Olga O.,Kolodiazhnyi, Oleg I.
, p. 322 - 328 (2016/02/18)
Reaction of P-chloroylides with carbonyl compounds leads to the formation of four-membered phosphorus heterocycles - 25-chloro-2,2-oxaphosphetanes. The 2-chloro-2,2-oxaphosphetanes depending on substituent R at α;-atom carbon, rearrange with formation of 2-chloroalkylphosphonates (R = H, Alk, Ar) or with elimination of trimethylchlorosilane (R = Me3Si) convert into trans-phosphorylated alkenes.
A New Route to Dialkyl 1-(Trimethylsilyl)- and 1-(Trimethylstannyl)-alkanephosphonates
Savignac, Philippe,Mathey, Francois
, p. 725 - 726 (2007/10/02)
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