Jaroslaw Chojnacki

Application of azoles as neutral carriers in liquid membrane ion-selective pH electrodes

New synthetic H+-selective carriers, derivatives of pyrazole, have been used as ionophores in liquid membrane electrodes for pH measurements in the acidic range. Selectivity coefficients toward sodium, potassium and calcium have been determined in this range and they are comparable to or better than those for previously described carriers.

Gallium Zigzag Chains as an Ordering Principle in η5-2,5-di-(t-butyl) phospholylgallium(I)

The solid state structure of h5-2,5-di-(t-butyl)phospholylgallium(I) 1 was detd. by x-ray diffraction at 190 K. The mols. of 1 are partly organized in a new type of structure: a Ga zigzag chain in which the arom. phospholyl rings alternate on both sides of the chain. [on SciFinder (R)]

(3,5‐Dimethyl­pyridine)bis­(tri‐tert‐butoxy­silanethiol­ato)cadmium(II)

The title compound, [Cd(C12H27O3SSi)2(C7H9N)], is a molxadecular heteroleptic cadmium thiolxadate containing an additional 3,5-dimethylxadpyridine ligand. The CdII ion is located at the centre of the trigonal bipyramid formed by five atoms, viz. two S, two O and one N. Molxadecules pack as discrete units, with no short interxadmolecular contacts.

(μ-Tri-tert-butoxysilanethiol­ato)­bis[(tetra­hydro­furan)lithium(I)] and catena-poly[[bis­(μ-tri-tert-butoxy­silanethiol­ato)dilithium(I)]-μ-dimethoxy­ethane]: solvent coordination as the structure-forming factor

The title compounds, μ-(tri-tert-butoxysilanethiolato-κ 2 S:S)-bis[(tetrahydrofuran-κO)lithium(I)], [Li 2 (C 12 H 27 O 3 SSi) 2 -(C 4 H 8 O) 2 ], (I), and catenma-poly[[bis(μ-tri-tert-butoxysilanethiolato)-1:2κ 2 S;1κS:2κS,O-dilithium(I)]-μ-dimethoxyethane-κ 2 O:O], [Li 2 (C 12 H 27 O 3 SSi) 2 (C 4 H 10 O 2 )] n , (II), were obtained by the reaction of tri-tert-butoxysilanethiol with metallic lithium. The crude product, when recrystallized from tetrahydrofuran (THF) yields (I), and when recrystallized from 1,2-dimethoxyethane (DME) gives (II). Compound (I) forms centrosymmetric dimers in the solid state with an Li 2 S 2 central core, whereas (II) forms infinitely long chains, in which the centrosymmetric dimeric units are linked together by the bidentate DME ligand (also residing on an inversion centre), thus forming a coordination polymer. The formation of a one-dimensional structure in (II) is a consequence of replacement of a monodentate THF solvent molecule with a bidentate DME molecule.

Di­cyclo­hexyl­ammonium benzene­thiol­ate

The title compound, C12H24N+·C6H5S−, has been obtained by the reaction of C6H5SH with dixadcycloxadhexylxadamine. The two ionic fragments are linked together in long chains by ⋯N—H⋯S⋯ hydrogen bonds. There are two formula units in the asymmetric unit.

Sperminium bis(tri-tert-butoxysilanethiolate)–2-propanol (1/2)

The title compound, C10H28N42+·2C12H27O3SSi−·2C3H8O, has been obtained by the reaction of (tBuO)3SiSH with spermine in the presence of 2-propanol. The sperminium cation sits on an inversion centre at the mid-point of the central C—C bond. The three species are linked together in infinite chains, mainly by N—H⋯S hydrogen bonds.

cis-Dichloro­(di-tert-butyl­phosphine-κP)(triphenyl­phosphine-κP)platinum(II) tetra­hydro­furan hemisolvate

The title compound, [PtCl2(C8H19P)(C18H15P)]·0.5C4H8O, was obtained in the reaction of bisxad(triphenylxadphosphine)xadplatinum(II) chloride with 1,1,3,3-tetra-tert-butyl-2-trimethylxadsilyltriphosphine. The 31P{1H} NMR spectrum of the reaction mixture shows the formation of the title compound together with a significant amount of triphenylxadphosphine and 1,1,3,3-tetra-tert-butylxadtriphosphine.

catena-Poly[[(diethyl ether-κO)lithium(I)]-μ-1,1,3,3-tetra­isopropyl­triphosphane-κP2:κ2P1,P3-lithium(I)-μ-1,1,3,3-tetra­isopropyl­triphosphane-κ2P1,P3:κP2]

The title compound, [Li2(C12H28P3)2(C4H10O)]n, is a by-product of the reaction of [(Et2PhP)2PtCl2] with iPr2P—P(SiMe3)Li in tetraxadhydroxadfuran. It is the second coordination polymer among known triphosphane–lithium salts. Of the two independent Li atoms, one is tetraxadhedrally coordinated, whereas the second has a trigonal environment.

catena‐Poly­[[(tetra­hydro­furan‐κO)­lithium(I)]‐μ‐1,1,3,3‐tetra­phenyl­triphosphane‐κ2P1,P3:κP2]

The title compound, [Li(C24H20P3)(C4H8O)]n, was obtained by the reaction of bisxad(triethylxadphosphane)xadplatinum(II) chloride with 1,1-dixadphenyl-2-(trixadmethylxadsilyl)-2-lixadthiaxaddiphosxadphane, (C6H5)2P—P(SiMe3)Li·3C4H8O. The compound is formed in the latter stages of the reaction. It is the first coordination polymer among known triphosphane lithium salts.

4-(Tri-tert-butoxy­silyl­thio­mercurio)­benzoic acid

The title compound, [Hg(C7H5O2)(C12H27O3SSi)], was obtained by the reaction of 4-hydroxyxadmercurioxadbenzoic acid with tri-tert-butoxyxadsilanexadthiol. There are two independent molxadecules in the asymmetric unit, which are linked by hydrogen bonds involving the carboxylxadic acid groups. Two heterocubane-like Hg4S4 supramolecular arrangements are formed by weak Hg⋯S interactions.