Nucleophilic substitution reactions of benzyl- and diphenylmethyl-phosphonamidic chlorides with amines: competition between the usual SN2(P) mechanism and elimination–addition with an alkylideneoxophosphorane (phosphene) intermediate
A carbonic acid ester is provided that is represented by the formula below and has a melting point of no greater than 0° C.
(In the formula, R
1
and R
2
independently denote a saturated hydrocarbon group, R
1
is a branched chain, and R
2
is a straight or branched chain). There is also provided a magnetic recording medium that includes a non-magnetic support and, above the support, at least one magnetic layer including a ferromagnetic powder dispersed in a binder, the magnetic layer including the carbonic acid ester. Furthermore, there is provided a magnetic recording medium including a support and, above the support, a non-magnetic layer including a non-magnetic powder dispersed in a binder, and above the non-magnetic layer, at least one magnetic layer including a ferromagnetic powder dispersed in a binder, the non-magnetic layer and/or the magnetic layer including the carbonic acid ester.
Synthesis and Characterization of High Nuclearity Iron(III) Phosphonate Molecular Clusters
作者:Sanjit Konar、Abraham Clearfield
DOI:10.1021/ic702453g
日期:2008.7.7
been synthesized and employed in search of high molecularity iron(III) clusters. The cluster compounds are characterized by single crystal X-ray diffraction and magnetic measurements. The solvothermal reaction of FeCl 3.6H 2O with diphenylacetic acid and p- (t)butylphenyl phosphonic acid resulted in an unprecedented dodecanuclear cluster [Fe 12(mu 2-O) 4(mu 3-O) 4(O 2CCHPh 2) 14(4- (t)buPhPO 3H) 6](
DIARYL ALKYLPHOSPHONATES AND METHODS FOR PREPARING SAME
申请人:Freitag Dieter
公开号:US20070021626A1
公开(公告)日:2007-01-25
A method of making optionally substituted diaryl alkylphosphonates from an optionally substituted arylol, an optionally substituted alkanol, and a phosphorous trihalide is described.
[EN] MONOHYDROXY CYCLIC PHOSPHONATE SUBSTANTIALLY FREE OF POLYHYDOXY PHOSPHONATE, PROCESS FOR MAKING SAME AND FLAME RETARDANT FLEXIBLE POLYURETHANE FOAM OBTAINED THEREFROM<br/>[FR] PHOSPHONATE MONOHYDROXY CYCLIQUE SENSIBLEMENT EXEMPT DE PHOSPHONATE POLYHYDROXY, SON PROCÉDÉ DE FABRICATION ET MOUSSE SOUPLE DE POLYURÉTHANNE IGNIFUGE OBTENUE AVEC CE COMPOSÉ
申请人:ICL IP AMERICA INC
公开号:WO2012040074A1
公开(公告)日:2012-03-29
A monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate is employed as a reactive flame retardant in flexible polyurethane.
Solvothermal Synthesis and Characterization of Two High-Nuclearity Mixed-Valent Manganese Phosphonate Clusters
作者:Sanjit Konar、Abraham Clearfield
DOI:10.1021/ic8001493
日期:2008.5.1
Two novel mixed-valent manganese (Mn(II)/Mn(III)) cluster compounds were synthesized in solvothermal reactions and characterized by single-crystal X-ray diffraction, bond valence sum calculations, IR spectra, elemental analysis, and magnetic measurements. Compound 1 is a Mn 19 cluster with a cylindrical core structure. Compound 2 possess a Mn 16 core where all of the manganese sites have unique ligation