Výsledky vyhledávání - "Johan C. van de Grampel"

New dioxytetraethyleneoxy macrocyclic cyclophosphazene derivatives

Autor: Jaroslaw Drodz, Krystyna Brandt, Johan C. van de Grampel, Teobald Kupka, Auke Meetsma, A. P. Jekel

Publikováno v: Inorganica Chimica Acta. 228:187-192

A series of macrocyclic cyclophosphazene containing derivatives of mono-ansa, mono-spiro, spiro-ansa and bis-ansa structure together with polymeric materials have been obtained by the reaction of hexachlorocyclotriphosphazene with tetraethylene glyco

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f8b22b4e118138cc359ffc32fb5ef07d
https://doi.org/10.1016/0020-1693(94)04162-o

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Preparation of urethane and urea derivatives of (NPCl2)3

Autor: Harm Pol, Pieter Lykle Buwalda, Auke Meetsma, A. P. Jekel, Adri A. van der Huizen, Johan C. van de Grampel, Theo Wilting

Publikováno v: Journal of the Chemical Society-Dalton Transactions, 577-581. ROYAL SOC CHEMISTRY
ISSUE=4;STARTPAGE=577;ENDPAGE=581;ISSN=0300-9246;TITLE=Journal of the Chemical Society-Dalton Transactions

Reactions of (NPCl2)3 with NaNCO in the presence of aliphatic alcohols have been investigated. Using an equimolar amount of NaNCO in refluxing acetonitrile, high yields of mono(urethane) derivatives N3P3Cl5(NHCO2R) were obtained. Disubstitution is ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c44d3b2007aab6a2fb4e544246af256a
https://hdl.handle.net/11370/06d6ca04-8f8f-4d21-820d-edbd66d649ac

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The Application of Phosphazene Containing Polymers as Negative Resists in Microlithography

Autor: B. A. C. Rousseeuw, R Puyenbroek, Emile van der Drift, G. Bosscher, Johan C. van de Grampel

Publikováno v: Phosphorus Sulfur and Silicon and the Related Elements, 93(1-4), 277-280. GORDON BREACH SCI PUBL LTD

New terpolymers containing phosphazene, epoxy and silicon moieties have been synthesized which were used as negative resists in microlithography. In addition to synthesis and characterization, lithographic properties are discussed.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d1a0690966d02bfd4b77eaaf17601c
https://doi.org/10.1080/10426509408021834

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Preparation, spectroscopic and structural characterization of η1-N and η2-Se,Se′ complexes of a P2N4Se2ring

Autor: Daniel D. Doxsee, Tristram Chivers, Johan C. van de Grampel, Robert W. Hilts, Auke Meetsma, Masood Parvez

Publikováno v: J. Chem. Soc., Chem. Commun.. :1330-1332

The reaction of 1,5-Ph4P2N4Se2, 1, prepared by the treatment of Ph2PN2(SiMe3)3 with a mixture of SeCl4 and Se2Cl2 in acetonitrile, with [PtCl2(PEt3)]2 gives the adducts [PtCl2(PEt3)]n[η1-N-Ph4P2N4Se2](2, n- 1; 3, n- 2) in which the P2N4Se2 ring is s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dcdf4762c574b2c0f09ffc68f9116f95
https://doi.org/10.1039/c39920001330

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Fluorinated cyclothiaphosphazenes

Autor: Herman F M Schoo, A. P. Jekel, Herman Winter, Johan C. van de Grampel, A. Meetsma

Publikováno v: Phosphorus Sulfur and Silicon and the Related Elements, 115(1), 261-271. GORDON BREACH SCI PUBL LTD

Reaction of chlorocyclothiaphosphazenes NPCl2(NSOX)(2) (X = Cl, Ph) and (NPCl2)(2)NSOX (X = Cl, F, Ph) with KSO2F in bulk leads to fluorination at the phosphorus centers. The substitution reaction follows a geminal pattern. Reactions of trans-NPF2(NS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bb6f9be107b6a2e0075090301169d4a
https://hdl.handle.net/11370/c580f3ff-b099-45ae-aa6d-3d36c2dc1d15

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Polymerization of Organo-Substituted Silanes by Hydroslylation

Autor: A. P. Jekel, Rächel H. J. Hendriks, Erwin G. M. Veldman, Bea M. W. Voss, R Puyenbroek, Johan C. van de Grampel

Publikováno v: Phosphorus Sulfur and Silicon and the Related Elements, 93(1-4), 363-364. GORDON BREACH SCI PUBL LTD

Polymerization of unsaturated organo-substituted silanes by catalytic hydrosilylation leads to both polymeric and cyclic carbosilanes.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd49f841135b116d284c730b1f11093e
https://research.rug.nl/en/publications/1269150f-59ae-4b0d-909a-18e874799d34

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Synthesis of Phosphazene Containing Macromolecules from Novel Monomers

Autor: G. Bosscher, Johan C. van de Grampel, Gerard P. De Vries

Publikováno v: Phosphorus Sulfur and Silicon and the Related Elements, 93(1-4), 419-420. GORDON BREACH SCI PUBL LTD

Phosphazene rings substituted with polymerizable groups have been the subject of extensive research for many years. Polymerization reactions with these monomers result in hybrid inorganic-organic polymers, which demonstrate an enhanced flame retardan

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5f35b4beab6b5a6412d8a528e7d395c
https://doi.org/10.1080/10426509408021883

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Dalton communications. Preparation, crystal structure and fluxional behaviour of σ-S-bonded palladium and platinum complexes of the Ph4P2N4S2R–(R = Me or But) anions

Autor: Tristram Chivers, M Edwards, Robert W. Hilts, Johan C. van de Grampel, Auke Meetsma

Publikováno v: J. Chem. Soc., Dalton Trans.. :3053-3054

The reaction of the Ph4P2N4S2R– anions (R = Me or But), generated from 1,5-Ph4P2N4S2 and the appropriate alkyllithium reagent, with cis- or trans-[MCl2(PEt3)2](M = Pd or Pt) produces the complexes [MCl(PEt3)2(Ph4P2N4S2R)](R = Me, M = Pd or Pt; R =

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e8281857332671dda3f310140dc7037
https://doi.org/10.1039/dt9920003053

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Chlorine-35 nuclear quadrupole resonance studies of some six-membered ring systems containing nitrogen, sulphur, and/or phosphorus : α-(NSClO)3, cis-(NSClO)2(NPCl2), and (NSClO)(NPCl2)2

Autor: Johan C. van de Grampel, Robert A. Shaw, Alan Connelly, Andrew L. Porte, Peter Harkins

Publikováno v: J. Chem. Soc., Dalton Trans.. :1012-1016

Chlorine-35 n.q.r. spectra for α-(NSClO)3, cis-(NSClO)2(NPCl2), and (NSClO)(NPCl2)2 have been recorded in the temperature range 77–300 K. Spectra have also been examined for these substances at 293 K when subjected to pressures within the range 1�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35b1f3c868ae8a847053c1767c6af232
https://doi.org/10.1039/dt9800001012

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Structures of inorganic rings as antitumor agents

Autor: François Sournies, Adriaan A. van der Huizen, Jean-François Labarre, Johan C. van de Grampel, T. Stanley Cameron

Publikováno v: Journal de Chimie Physique. 82:941-948

(NPAz 2 ) 2 NSOF, C 8 H 16 FN 7 OP 2 S, Mr = 339.3, monoclinic, a = 10.506(2), b = 16.964(3), c = 8.506(1)A, γ = 98.77(1)°. Z = 4, Dc = 1.508 g.cm -3 , space group P2 1 /b, 2606 unique reflections, R = 0.053; (NPAz 2 ) 2 NSOPh, C 14 H 21 N 7 OP 2 S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4f3b50a3eac1e1eb5039a2113ae69501
https://doi.org/10.1051/jcp/1985820941

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