منابع مشابه
Phosphorus-Sulfur Heterocycles Incorporating an O-P(S)-O or O-P(S)-S-S-P(S)-O Scaffold: One-Pot Synthesis and Crystal Structure Study.
A new one-pot preparative route was developed to synthesize novel organophosphorus-sulfur heterocycles via the reaction of the four-membered ring thionation reagent [2,4-diferrocenyl-1,3,2,4-diathiadiphosphetane 2,4-disulfide (FcLR, a ferrocene analogue of Lawesson's reagent)] and alkenyl/aryl-diols and I₂ (or SOCl₂) in the presence of triethylamine. Therefore, a series of five- to ten-membered...
متن کاملcatena-Poly[[[O,O′-bis(2-methylphenyl) dithiophosphato-κ2 S,S]lead(II)]-μ-O,O′-bis(2-methylphenyl) dithiophosphato-κ3 S,S′:S]
In the title compound, [Pb(C14H14O2PS2)2] n , the metal atom is surrounded by two O,O'-bis-(2-methyl-phen-yl) dithio-phosphate ligands bonding through the S-donor atoms. Three of the Pb-S bond lengths are are close to each other at 2.7710 (18), 2.8104 (16) and 2.8205 (16) Å, while the fourth Pb-S bond is elongated at 3.0910 (18) Å and reflects the fact that this atom is involved in inter-molecu...
متن کاملسنتز، بررسی طیفی و ساختاری ترکیبات جدید فسفرآمید دارای قطعه های (c(o)nhp(o و (s(o)2nhp(o
در این پژوهش، تعدادی ترکیب فسفر-کلر با فرمول های xc(o)nhp(o)cl2 x]=cf3، ccl3، cf2cl و[ch2cl ، 4-ch3-c6h4nhp(o)cl2 ، 4-ch3-c6h4s(o)2nhp(o)cl2 و [4-ch3-c6h4nh]2p(o)cl تهیه و برای سنتز فسفر آمیدهای با فرمول ccl3c(o)nhp(o)y ] [nh(ch2)3nh=y (1) و [nhch2c(ch3)2ch2nh=y] (2)، [h2n(ch2ch3)2][4-ch3-c6h4s(o)2nhp(o)n(ch2ch3)2].h2o (3)، 4-ch3-c6h4nhp(o)[n(ch3)(ch2c6h5)]2 (4)، [4-ch3-c6h4nh]2p(o)op(o)[nhc6h4...
15 صفحه اولPhosmet: O,O-dimethyl S-phthalimidomethyl phosphorodithioate
In the title compound, C(11)H(12)NO(4)PS(2), the dihedral angle between the phthalimidyl ring plane and the PS(2) plane of the phospho-rodithio-ate group is 60.41 (3)°. In the crystal structure, weak inter-molecular C-H⋯O hydrogen bonds and S⋯S inter-actions [3.3825 (9) Å] contribute to the stabilization of the packing.
متن کاملO M S-o T H
We compare classes of finite relational structures via monadic second-order transductions. More precisely, we study the preorder C ⊑ K : iff C ⊆ τ(K) for some transduction τ. If we only consider classes of incidence structures we can completely describe the resulting hierarchy. It is linear of order type ω + . Each level can be characterised in terms of a suitable variant of tree-width. Canoni...
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ژورنال
عنوان ژورنال: Cadernos de Literatura em Tradução
سال: 1998
ISSN: 2359-5388,1981-2558
DOI: 10.11606/issn.2359-5388.i2p66-67