Research Interests:
Research Interests:
Research Interests:
ABSTRACT Single crystals of Na1.2Mg1.2Cr1.8(PO4)3 are prepared by drying (353 K, 24 h) a 6N HNO3 solution of Na2CO3, Mg(NO3)2, Cr(NO3)3, (NH4)H2PO4, and MoO3 followed by a complex heating schedule (the formed Na2Mo2O7 is used as a flux in... more
ABSTRACT Single crystals of Na1.2Mg1.2Cr1.8(PO4)3 are prepared by drying (353 K, 24 h) a 6N HNO3 solution of Na2CO3, Mg(NO3)2, Cr(NO3)3, (NH4)H2PO4, and MoO3 followed by a complex heating schedule (the formed Na2Mo2O7 is used as a flux in 3-fold molar excess; Pt crucible, 473-873 K, 24 h/stage; 1523 K, 1 h).
Research Interests:
Research Interests:
The complex species formed in aqueous solution between Ni(II) and meta-phenylenediamine- N, N, N′, N′-tetraacetic acid were studied at 25[ddot]C and ionic strength O.I M in KC1. Potentiometric investigations were carried out at... more
The complex species formed in aqueous solution between Ni(II) and meta-phenylenediamine- N, N, N′, N′-tetraacetic acid were studied at 25[ddot]C and ionic strength O.I M in KC1. Potentiometric investigations were carried out at ligand:metal ratios 2:1, 1:1 and 1:2. The concentration of Ni(II) was I mM, 2mM and 3 mM. The application of the least-squares computer program LETAGROP to the
Research Interests:
Research Interests:
Research Interests:
Mechanochemical synthesis was used to prepare a series of [Nb2(μ-Q2)2(LL)4] complexes with various bidentate ligands (Q=S, Se; LL is oxalate, dithiocarbamates, xanthates, acetylacetonate and dithiophosphate). The reactions always give two... more
Mechanochemical synthesis was used to prepare a series of [Nb2(μ-Q2)2(LL)4] complexes with various bidentate ligands (Q=S, Se; LL is oxalate, dithiocarbamates, xanthates, acetylacetonate and dithiophosphate). The reactions always give two isomers which differ by the relative orientation of the chelate rings, as was shown by 77Se, 13C and 31P NMR techniques. Crystal and molecular structures of centrosymmetric isomers of [Nb2(μ-Se2)2(acac)4], [Nb2(μ-Q2)2(n-Bu2NCS2)4], [Nb2(μ-Se2)2((i-PrO)2PS2)4], and of the non-centrosymmetric isomers of [Nb2(μ-S2)2(i-Bu2NCS2)4] and [Nb2(μ-Se2)2(EtOCS2)4]·CHCl3 were determined. Quantum chemical calculations were used to establish the HOMO–LUMO composition of several Nb2(S2)24+ complexes, to probe the extent of M–M bonding and to interpret the electronic spectra. Mass-spectrometry and thermogravimetric data are also reported.
Research Interests:
Dimer Species in Aqueous Solution of the m-Phenylenediamine-N,N,N',N'-tetraacetic Acid (m-PDTA) with Copper (II) and of 2,6-Pyridinediamine-N,N,N',N'-tetraacetic acid (2,6-PDTA) with Nickel (II). X-Ray Crystal Structures of Na4[Cu2(m-PDTA)2].18H2O. Na4[Co2(m-PDTA)2].10H2O and Na4[Ni2(2,6-PDTA)2]....more
Research Interests:
See the following articles: (1) J. Appl. Cryst. (1981). 14, 472-473. "Crystal data for the decavanadates of 2,4-,3,4-, and 3,5-dimethylpyridine and 2,4,6-trimethylpyridine". By J. M. ARRIETA, J.M. AMIGÓ and P. GILI. (2) J. Appl.... more
See the following articles: (1) J. Appl. Cryst. (1981). 14, 472-473. "Crystal data for the decavanadates of 2,4-,3,4-, and 3,5-dimethylpyridine and 2,4,6-trimethylpyridine". By J. M. ARRIETA, J.M. AMIGÓ and P. GILI. (2) J. Appl. Cryst. (1981). 14, 209--210. "Crystal data for the decavanadates of methylpyridines" . By J. M. ARRrETA . P. GILI and J.M.AMIGÓ. (3) J. Appl. Cryst. (1982). 15, 104-105. "Crystal data for the decavanadates of pyridine, 2-ethyipyridine and 3-ethylpyridine" . By J. M. ARRIETA, J. M. AMIGO and P. GILl.
Research Interests:
We have synthesized and characterized five new chlorochromate(VI) complexes of organic bases: 4,4'-bipyridinium bis[chlorochromate(VI)], (C 10 H 10 N 2 )[CrO 3 Cl] 2 , 4-methylquinolinium chlorochromate(VI), (C 10 H 10 N)[CrO 3 Cl],... more
We have synthesized and characterized five new chlorochromate(VI) complexes of organic bases: 4,4'-bipyridinium bis[chlorochromate(VI)], (C 10 H 10 N 2 )[CrO 3 Cl] 2 , 4-methylquinolinium chlorochromate(VI), (C 10 H 10 N)[CrO 3 Cl], 6-methylquinolinium chlorochromate(VI), (C ...
Research Interests:
Experimental. Sal TPA was obtained using methods previously described (Soerens, Saudrin, Ungeniach, Mokry, Wu, Yamanaka, Hutchins, Dipierro & Cook, 1979) but with ethanol instead of benzene as solvent, giving a good yield without... more
Experimental. Sal TPA was obtained using methods previously described (Soerens, Saudrin, Ungeniach, Mokry, Wu, Yamanaka, Hutchins, Dipierro & Cook, 1979) but with ethanol instead of benzene as solvent, giving a good yield without Pictet-Spengler cyclization of ...
Research Interests:
ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select... more
ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ABSTRACT
Research Interests:
... [6] (a)A. Mena-Cruz, P. Lorenzo-Luis, A. Romerosa and M. Serrano-Ruiz, Inorg. Chem. 47 (2008), p. 2246. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (16) (b)A. Mena-Cruz, P. Lorenzo-Luis, A. Romerosa, M. Saoud... more
... [6] (a)A. Mena-Cruz, P. Lorenzo-Luis, A. Romerosa and M. Serrano-Ruiz, Inorg. Chem. 47 (2008), p. 2246. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (16) (b)A. Mena-Cruz, P. Lorenzo-Luis, A. Romerosa, M. Saoud and M. Serrano-Ruiz, Inorg. Chem. ...
Research Interests:
... Pedro Gili, a Pedro Núñez, a * Pedro Martín-Zarza a and Pablo A. Lorenzo-Luis a. ... Mechanisms of interconversion of polyoxometalates have been described (Masters et al., 1980 [Masters, AF, Gheller, SF, Brownlee, RTC,... more
... Pedro Gili, a Pedro Núñez, a * Pedro Martín-Zarza a and Pablo A. Lorenzo-Luis a. ... Mechanisms of interconversion of polyoxometalates have been described (Masters et al., 1980 [Masters, AF, Gheller, SF, Brownlee, RTC, O'Connor, MJO & Wedd, AD (1980). Inorg. Chem. ...
Research Interests:
Research Interests:
Research Interests:
Dimer species in aqueous solutions of m?phenylenediamine-N,N,N?,N?-tetra-acetic acid (m-H4pdta) with copper(II) and of pyridine-2,6-diamine-N,N,N?,N?-tetra-acetic acid (2,6-H4pydta) with nickel(II). X-Ray crystal structures of Na4[Cu2(m-pdta)2]�18H2O, Na4[Co2(m-pdta)2]�10H2O, and Na4[Ni2(2,6-pydt...more
Research Interests:
Research Interests:
ABSTRACT
Research Interests:
ABSTRACT
Research Interests:
ABSTRACT
Research Interests:
Research Interests:
Tungstotellurates of the organic imidazolium and 4-methyl-imidazolium cations have been prepared and characterized by X-ray diffraction and i.r. spectroscopy. The [TeW6O24]6- anion is formed by close packing of oxygen atoms with Te and W... more
Tungstotellurates of the organic imidazolium and 4-methyl-imidazolium cations have been prepared and characterized by X-ray diffraction and i.r. spectroscopy. The [TeW6O24]6- anion is formed by close packing of oxygen atoms with Te and W atoms in distorted octahedral voids. In both compounds the organic cations are involved in hydrogen bonds, to the [TeW6O24]6- anion in [H2imz]6[TeW6O24] · 2(Himz) (1) and to Te(OH)6 units in [4-H2-methyl-imz]6[TeW6O24] · Te(OH)6 (2). Solution studies of (1) and (2) by 1H-, 183W- and 125Te-n.m.r. have been carried out. Thermogravimetric (t.g.) and calorimetric (d.s.c.) analyses were performed for both compounds.
Research Interests:
Research Interests:
Abstract Molybdenum trioxide reacts with pyrazole to give the octamolybdate:(C 3 H 4 N 2 H) 4 [(C 3 H 4 N 2) 2 (Mo 8 O 26)]. The anion [(C 3 H 4 N 2) 2 (Mo 8 O 26)] 4−, is built of two C 3 H 4 N 2 MoO 5 and six MoO 6 edge-sharing... more
Abstract Molybdenum trioxide reacts with pyrazole to give the octamolybdate:(C 3 H 4 N 2 H) 4 [(C 3 H 4 N 2) 2 (Mo 8 O 26)]. The anion [(C 3 H 4 N 2) 2 (Mo 8 O 26)] 4−, is built of two C 3 H 4 N 2 MoO 5 and six MoO 6 edge-sharing octahedra. The Mo---NNC 3 H 4 bond length ...