Nickel(II) hexamethyleneiminedithiocarbamate complexes with triphenylphosphine or tributylphosphine

A series of square-planar nickel(II) hexamethylenedithiocarbamate complexes with heterogeneous coordination spheres of composition [NiX(hmidtc)Y] · nCHCl₃ [X = Cl, Br, I or NCS; hmi = C₆H₁₂, dtc = S₂CN^–; Y = PPh₃ or PBu₃, n = 0,1] have been synthesized and characterized by elemental analyses, i.r. and u.v.–v.i.s. spectroscopy, magnetochemical and conductivity measurements, and by thermal analysis. X-ray structures of [NiCl(hmidtc)(PPh₃)] · CHCl₃ and [NiBr(hmidtc)(PPh₃)] · CHCl₃ have been determined.     

Heterocyclic nickel(II) dithiocarbamates with aromatic thiols as bridging ligands

Binuclear NiII dithiocarbamates, with aromatic monothiols as bridging ligands, of composition [Ni(-L) (Rdtc)]2 [dtc = S2CN, R = C4H8O (morph), C5H10 (pip), C4H8 (pld); HL = thiophenol, 4-methylthiophenol or 2-thionaphthol] and [Ni(-L)(HR1dtc)]2 {R1 = C11H11N2O (aap)} have been prepared and characterized by elemental analyses, i.r. and electron spectroscopy, magnetochemical and conductivity measurements, and thermal analysis. The methods used indicate that the complexes are diamagnetic, complex non-electrolytes with two square-planar NiS4 chromophores.     

Chemie der Seltenerdmetalle, 12. Mitt.: pH-metrische Bestimmung des SystemsLn 3+−H4 T−KOH im sauren Bereich

Zusammenfassung Auf Grund von pH-Messungen wurden die erste und zweite Dissoziationskonstante der Weinsäure und Dissoziationskonstanten der KomplexionenLnH₂ T ⁺,Ln ₂H₂ T ⁴⁺,Ln(H₂ T)₂-undLnHT bestimmt.

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The first and second constant of dissociation of tartaric acid, and the constants of dissociation of the complex ionsLnH₂ T ⁺,Ln ₂H₂ T ⁴⁺,Ln(H₂ T)₂- andLnHT were determined, making use of p_H-measurements.

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Zugl. 30. Mitt. der Reihe: Koordinationsverbindungen mit organischen Hydroxysäuren.

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Ln ³⁺=La³⁺, Ce³⁺.

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H₄ T=C₄H₆O₆.     

Verbindungen der Seltenerdelemente mit α-Benzoinoxim, 1. Mitt.

Zusammenfassung Substanzen der ZusammensetzungLnCl₃·3H₂ Box ^* (Ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Y) und LaBr₃·3 H₂ Box wurden isoliert und durch Thermoanalyse, IR-Absorptionsspektren und Röntgenstreuung charakterisiert.

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Compounds of the rare earth elements with -benzoin oxime

Compounds of compositionLnCl₃·3 H₂ Box ^* (Ln=La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Y) and LaBr₃·3H₂ Box were isolated and characterized by thermoanalysis, IR spectroscopy and X-ray diffraction.

     

Effect of hydrothermal treatment on the structure of an aluminosilicate polymer

The effect of hydrothermal treatment on the structure of an aluminosilicate polymer prepared by a polycondensation reaction between silicate and hydroxoaluminate in alkaline aqueous solution was studied. The structural changes were investigated using X-ray diffraction analysis, Fourier-transform infrared spectroscopy, scanning electron microscopy imaging and thermogravimetric analysis. The results indicated that the amorphous aluminosilicate polymer transformed into a crystalline product during the hydrothermal treatment at 145°C. The crystalline phase was identified as a mineral of the zeolite group, most likely phillipsite. This transformation required an alkaline environment during the hydrothermal treatment.      

Lanthankomplexe mit 2,2′-Bipyridin-N,N′-dioxid

Compounds of the composition La(bpyO₂ ^*)₄Cl₃·4H₂O, La(bpyO₂)₃Cl₃·5H₂O, La(bpyO₂)₂Cl₃·3H₂O, La(bpyO₂)Cl₃·3H₂O, La(bpyO₂)₄Br₃·4H₂O, La(bpyO₂)₃Br₃·8H₂O, La(bpyO₂)₂Br₃·7H₂O, La(bpyO₂)Br₃·4H₂O, La(bpyO₂)₄I₃·3H₂O, La(bpyO₂)₃(NO₃)₃·2H₂O, La(bpyO₂)₂(NO₃)₃·2H₂O, La(bpyO₂)₄(SCN)₃·3H₂O, La(bpyO₂)₃(SCN)₃·2H₂O, La(bpyO₂)₂(SCN)₃·2H₂O were isolated. They were investigated by means of thermoanalysis, I.R. spectroscopy, X-ray diffraction and molar conductivity.     

A novel trinuclear nickel(II) complex with a Schiff base derived from m-phenylenediamine and diacetyl monoxime

Summary A tetradentate Schiff base derived from diacetyl monoxime and m-phenylenediamine (H₂mphdao₂) reacts in MeOH with NiI₂ to form the trinuclear complex Ni₃(mphdao₂)₂I₂, which was characterized by elemental and thermal analyses, and i.r. and u.v.-vis. spectroscopies. The magnetic properties have been investigated in the 4.2–300 K range.     

Chemie der Seltenerdmetalle, 20. Mitt.: Yttriumtartrate im neutralen und alkalischen Bereich

Zusammenfassung Es wurden die Verbindungen HYT ^*·4 H₂O, Y₄ T ₃·14 H₂O, LiYT·4 H₂O, NaYT·5 H₂O, KYT·3 H₂O, RbYT·4 H₂O, CsYT·4 H₂O, NH₄YT·3 H₂O, K₂YTOH·4 H₂O, K₃YT(OH)₂·4 H₂O, K₄YT(OH)₃·3 H₂O, K₅YT(OH)₄·3 H₂O, KYH₄ T ₂·3 H₂O, K₂YH₃ T ₂·5 H₂O, K₃YH₂ T ₂·4 H₂O, KY₂ T(OH)₃·5 H₂O, K₂Y₂ T(OH)₄·5 H₂O isoliert. Die Präparate wurden mit Hilfe von Thermoanalyse, IR-Absorptionsspektren und Röntgenstreuung näher charakterisiert und ihre Löslichkeit in Wasser untersucht.

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Some complexes of Yttrium with tartrates were isolated and the compounds characterised by thermogravimetric analysis, IR-spectroscopy and X-ray diffraction. Solubility in water was examined.

     

Komplexverbindungen der Seltenerdelemente mitα-Furoinoxim

Zusammenfassung Es wurden Verbindungen der ZusammensetzungLnCl₃ · 3 H₂ Fox ^* (Ln=La, Ce, Pr, Nd, Sm, Eu) isoliert. Diese Verbindungen wurden näher mit Hilfe von Thermoanalyse, IR-Absorptionsspektren und Röntgenstreuung untersucht. Auf Grund der Molarleitfähigkeitsmessungen in Methanol handelt es sich um den Typ 11 – [Ln(H₂ Fox)₃Cl₂]Cl – entsprechend der Koordinationszahl acht.

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Compounds of rare earth elements with-furoinoxime

Compounds of the general compositionLnCl₃ · 3 H₂ Fox (Ln=La, Ce, Pr, Nd, Sm, Eu) were isolated. They were investigated by means of thermoanalysis, I.R. spectroscopy and X-ray diffraction. Molar conductivity measurements in methanol confirmed the 11 composition – [Ln(H₂ Fox)₃Cl₂]Cl –corresponding to a coordination number eight.

     

Chemie der Seltenerdmetalle, 11. Mitt.: Yttriumtartratkomplexe im sauren Bereich

Zusammenfassung Es wurde ein systematisches Studium des Systems im sauren Bereich durchgeführt. Aus den Ergebnissen der pH-Messungen wurden die Gleichgewichtskonstanten der Komplexe [YH₃ T]²⁺, [YH₂ T]⁺, [Y₂H₂ T]⁴⁺, [Y(H₂ T)₂]^– und HYT bestimmt. Es wurden die Verbindungen Y₂(H₂ T)₃ · 8 H₂O, Y₂(H₂ T)₃ · 5 H₂O und H[Y(H₂ T)₂] · 3 H₂O isoliert. Diese wurden mit Hilfe von Röntgenstreuung, Thermoanalyse und IR-Absorptionsspektren untersucht.

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A systematic investigation of the system in the acidic range was undertaken. The equilibrium constants of the complexes [YH₃ T]²⁺, [YH₂ T]^–, [Y₂H₂ T]⁴⁺, [Y(H₂ T)₂]^– and HYT were determined, making use of the results of p_H-measurements. The compounds Y₂(H₂ T)₃ · 8 H₂O, Y₂(H₂ T)₃ · 5 H₂O and H[Y(H₂ T)₂] · 3 H₂O were isolated. Their X-ray diffraction, thermal analysis and IR spectra were investigated.

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Mit 2 Abbildungen

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Zugleich 24. Mitt. der Reihe: Koordinationsverbindungen von organischen Oxoubstanzen; H₄ T=C₄H₆O₆.