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نمایش تعداد 1-10 از 401

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    A novel tubular hydrogen bond pattern in the crystal structure of a new diazaphosphole oxide: (4-Cl-C6H4NH)P(O)(1,2-NH)2C6H4 

    نوع: Conference Paper
    نویسنده : Fahimeh Sabbaghi; Nazila Ghorbanian; مهرداد پورایوبی; Pavel V. Andreev; Mehrdad Pourayoubi
    سال: 2016
    خلاصه:

    neighbouring molecules through (N—H)2…O═P hydrogen bonds. These interactions form a tubular arrangement of fused hydrogen-bonded rings, of R33(12) and R34(14) graph-set motifs, along [001]. An N—H…π interaction exists in the tubular shape which does not change...

    Synthesis and characterization of a new phosphoramide, [C6H5O]2P(O)[NH(N2C4H8)CH3] 

    نوع: Conference Paper
    نویسنده : مهسا اقبالی طولارود; مهرداد پورایوبی; Michal Dušek; Václav Eigner; mahsa eghbali toolarood; Mehrdad Pourayoubi
    سال: 2017
    خلاصه:

    = 9.7336 (5) Å, c = 10.8779 (6) Å, α = 105.065(5)°, β = 95.052(5)°, γ = 113.987 (5)°, V = 868.18(10) (Å3), and Z = 2. In the crystal structure of title compound, adjacent molecules are linked via pairs of N—H•••O═P hydrogen bonds forming...

    Performance analysis of synchronous and receiver initiated MAC protocols under varying traffic density over Wireless Sensor Networks 

    نوع: Conference Paper
    نویسنده : Varghese, J.; Rao, S.V.
    ناشر: IEEE
    سال: 2014

    The First C(O) NHP (O)- based Phosphoric Triamide Structure With an N–H ••• π Hydrogen Bonding: A Combination of X-ray Crystallography And Theoretical Study to Evaluate The Strength of Hydrogen Bonds 

    نوع: Journal Paper
    نویسنده : مریم طاهرزاده; مهرداد پورایوبی; R.Afzali; M. Nečas; Maryam Taherzadeh; Mehrdad Pourayoubi
    سال: 2017
    خلاصه:

    of the molecules to a two-dimensional array parallel to the bc plane. A Cambridge Structural Database (CSD, version 5.37, Feb 2016) analysis shows that the N–H•••π hydrogen bond was not observed in any of 156 [RC(O)NH]P(O)[NR1R2]2 (R1≠H, R2= H or≠H) phosphoric...

    Iranian H9N2 Avian Influenza Virus is closely related to Pakistani Parakeet Influenza Virus isolates 

    نوع: Conference Paper
    نویسنده : Vahid, Karimi; Mohammad Hassan, Bozorgmehri Fard; Delavar, Shahbazzadeh; Majid, Esmaelizad
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    Syntheses and structures of four new mixed-amide phosphoric triamides 

    نوع: Journal Paper
    نویسنده : مجتبی کیخا; مهرداد پورایوبی; Atekeh Tarahhomi; Arie van der Lee; MOJTABA KEIKHA; Mehrdad Pourayoubi
    سال: 2016
    خلاصه:

    )2CH2NH– groups are compared, along with the different molecular volumes and electron-donor strengths. In all four structures, the molecules form extended chains through N—H…O hydrogen bonds....

    New rac-XP(O)(OC6H5)(NHC6H4-p-CH3) [X = N(CH3)(cyclo-C6H11) and NH(C3H5)] and rac-(C6H5CH2NH)-P(O)(OC6H5)(NH-cyclo-C6H11) mixed-amide phosphinates 

    نوع: Journal Paper
    نویسنده : مهرداد پورایوبی; فاطمه کریمی احمدآباد; حسین اشتیاق حسینی; Monika Kučeráková; Václav Eigner; Michal Dušek; Mehrdad Pourayoubi; fatemeh karimi; Hossein Eshtiagh Hosseini
    سال: 2013
    خلاصه:

    -methylcyclohexylamido and allylamido substituents. In (III), the differences between the P—N bond lengths involving the cyclohexylamido and benzylamido substituents are not significant. In all three structures, the phosphoryl O atom takes part with theN—H unit in hydrogen bonding...

    Extensive analysis of N—H…O hydrogen bonding in four classes of phosphorus compounds: a combined experimental and database study 

    نوع: Journal Paper
    نویسنده : فرحناز حمزه هرزنجی; مهرداد پورایوبی; Marek Nečas; Duane Choquesillo-Lazarte; Farahnaz Hamzehee Harzanji; Mehrdad Pourayoubi
    سال: 2017
    خلاصه:

    The N—H…O hydrogen bond is the characteristic interaction in the crystal structures of N-benzyl-P-phenyl-N'-(p-tolyl)phosphonic diamide, C20H21N2OP or (C6H5)P(O)(NHCH2C6H5)(NHC6H4-p-CH3), (I), diphenylphosphinic 1-methylpropylamide, C16H20NOP or (C6...

    A combined X-ray crystallography and theoretical study of N—H…OX (X is ═P and —C) hydrogen bonds in two new structures with a (C—O)2(N)P(═Y)(Y is O and S) skeleton 

    نوع: Journal Paper
    نویسنده : بنفشه وحدانی الویری; مهرداد پورایوبی; ابوالقاسم فرهادی پور; مارک نکاس; والریو برتولاسی; Banafsheh Vahdani Alviri; Mehrdad Pourayoubi
    سال: 2018
    خلاصه:

    )(C6H4)(4-NH)P(S)(OCH3)2, (II), have been investigated. In the structure of (I), with an (O)2(N)P(O) skeleton, two symmetry-independent phosphoramide molecules are linked through N—H…O═P hydrogen bonds. In the structure of (II), with an (O)2(N...

    Analysis of N—H…O hydrogen bonds in new C(O)—NH—P(O)-based phosphoric triamides and analogous structures deposited in the Cambridge Structural Database 

    نوع: Journal Paper
    نویسنده : مهرداد پورایوبی; مریم طغرائی; Vladimir Divjakovic; Arie van der Lee; Teresa Mancilla Percino; Marco A. Leyva Ramírez; اناهید صانعی; Mehrdad Pourayoubi; maryam toghraee; Anahid Saneei
    سال: 2013
    خلاصه:

    types of N—H…O hydrogen bonds have been analyzed for (1), (3), (4) and (5) and 118 other structures (including 194 hydrogen bonds) deposited in the Cambridge Structural Database, containing either C(O)—NH—P(O)[N(C)(C)]2 or C(O)—NH—P(O)[NH(C)]2...

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