Structural studies of (N-phenylthioureidoalkyl- and -aryl)phosphonates

The crystal structures of three (N-phenylthioureidoalkyl- and - aryl) phosphonates, i.e. diphenyl [(3-phenylthioureido) phenylpropyl] phosphonate, diphenyl [1-(3-phenylthioureido) benzyl] phosphonate and diphenyl [2,2-dimethyl-1-(3-phenylthioureido) propyl] phosphonate, have been determined by X-ray diffraction. The conformations of the title molecules, the geometry of the thioureide fragments and molecular packing arrangements are analyzed and compared with literature data

Protective properties against ultraviolet radiation of clothing textieles

Istotnym elementem ochrony skóry przed niekorzystnym wpływem promieniowania ultrafioletowego jest odzież. Właściwości barierowe dla promieniowania UV wyrobów włókienniczych mogą być poprawione poprzez odpowiednią, kierunkową ich modyfikację. W niniejszej pracy prezentujemy wyniki badań oceny modyfikacji wyrobów włókienniczych, ukierunkowanej na nadawaniu im właściwości barierowych dla promieniowania UV poprzez aplikację absorbera UV. Stosowanym środkiem był nowy, powstały w wieloetapowym procesie syntezy, absorber o budowie barwnika bezpośredniego. Modyfikowanym materiałem włókienniczym była dzianina bawełniana. Skuteczność modyfikacji sprawdzana była na spektrofotometrze UV-Vis oraz spektrometrze FT/IR.One of the most important aspects of clothing textiles is their protecting the skin from the damaging effects of ultrafiolet radiation. Barrier properties to UV radiation of textiles can be improved by structural and chemical modification of their surface. In this paper we present the results of studies of the modification of clothing fabrics focused on barrier properties of UV radiation by application of UV absorber. Agent-absorber witch we used to modifications was new, created in a multi-step synthesis process. Modified fabric was knitted cotton. The effectiveness of the modification was measured on a spectro-photometer UV-Vis spectrometer and FT/IR. This publication was prepared within the key project - PO IG no. 01.03.01-00-006/08 co-financed from the funds of European Regional Development Fund within the framework of the Operational Programme Innovative Economy

Two derivatives of (N-phenylthioureidoalkyl)phosphonates

The structures of diphenyl [3-methyl-1-(3-phenylthioureido)butyl]phosphonate and diphenyl [2-methyl-1-(3-phenylthioureido)butyl]phosphonate, both C24H27N2O3PS, are reported. In both compounds, the thiourea moiety adopts a syn-syn conformation (i.e. the S-C-N-C torsion angles are synperiplanar), which enables N-H...O hydrogen bonds to be formed between centrosymmetrically related molecules. The geometries around the P atoms can be described as distorted tetrahedral. Some of the functional groups in each structure are disordered. The bulk of the different alkyl substituents between the amide and phosphonate groups influences the molecular conformation and crystal packing. Although the structures of these compounds and two related derivatives appear to be similar, they are not isostructural