Structure of two new compounds of copper(I) iodide with N-donor and P-donor ligands

2018 ◽  
Vol 59 (4) ◽  
Keyword(s):  
Donor Ligands ◽  
New Compounds

scholarly journals Effect of N-donor ancillary ligands on structural and magnetic properties of oxalate copper(ii) complexes

2014 ◽  
Vol 38 (4) ◽  
pp. 1611-1626 ◽  
Author(s):  
Anna Świtlicka-Olszewska ◽  
Barbara Machura ◽  
Jerzy Mroziński ◽  
Bożena Kalińska ◽  
Rafał Kruszynski ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Donor Ligands ◽  
Ancillary Ligands ◽  
Structural And Magnetic Properties ◽  
New Compounds

Through varying the auxiliary N-donor ligands nine new compounds have been synthesized and characterised structurally and spectroscopically. The magnetic properties of the complexes have been investigated and discussed in the context of their structures.

scholarly journals Utilization of mixtures of aromatic N-donor ligands of different coordination ability for the solvothermal synthesis of thiostannate containing molecules

2015 ◽  
Vol 44 (25) ◽  
pp. 11542-11550 ◽  
Author(s):  
J. Hilbert ◽  
C. Näther ◽  
W. Bensch
Keyword(s):  
Solvothermal Synthesis ◽  
Donor Ligands ◽  
Π Interactions ◽  
Coordination Ability ◽  
New Compounds ◽  
Solvothermal Conditions

Combination of strong/medium or strong/weak coordinating aromatic N-donor ligands under solvothermal conditions leads to the formation of two new compounds stabilizedviaπ–π-interactions.

Two New Tripodal Ligands with an N4S3 Donor Set. The X-Ray Crystal Structure of 4,4′,4′′- [Nitrilotris(ethyleneimino)]tris(pent-3-ene-2-thione).

1997 ◽  
Vol 50 (4) ◽  
pp. 373 ◽  
Author(s):  
Penelope J. Brothers ◽  
Clifton E. F. Rickard ◽  
Claire M. Strange ◽  
David C. Ware
Keyword(s):  
Crystal Structure ◽  
Donor Ligands ◽  
Tripodal Ligands ◽  
Tripodal Ligand ◽  
X Ray ◽  
New Compounds

Two new compounds with a tripodal ligand architecture and with the potential to act as heptadentate N4S3 donor ligands are reported. H3S3trac (4,4′,4′′-[nitrilotris(ethyleneimino)]tris(pent-3-ene-2-thione)) is prepared by the reaction of acetylacetone with tren (tris(2-aminoethyl)amine), followed by treatment with P2S5. H3trimda (3,3′,3′′-[nitrilotris(ethyleneimino)]tris(2-phenylpropenethial)) is prepared by the reaction of 4-phenyl-1,2-dithiolium perchlorate with tren. A crystal structure of H3S3trac shows it to be monoclinic, P 21/c, a 11·443(7), b 11·7757(14), c 19·285(3) Å, β 106·68(2)°, Z 4, R 0·0454, ωR2 0·1108 for 1618 observed reflections (I > 3σ(I)). 1H and 13C { 1H} n.m.r. data for H3S3trac and H3trimda, and the crystal structure of H3S3trac are consistent with the compounds existing in the enamino thione tautomer.

Axially substituted titanium(IV) phthalocyanines

2000 ◽  
Vol 04 (07) ◽  
pp. 635-638 ◽  
Author(s):  
MARKUS BARTHEL ◽  
MICHAEL HANACK
Keyword(s):  
Chelating Agents ◽  
Donor Ligands ◽  
Axial Position ◽  
Bidentate Ligands ◽  
Enhanced Solubility ◽  
New Compounds ◽  
Sulfur Donor Ligands ◽  
Sulfur Donor

An easy synthesis of phthalocyaninatotitanium(IV) compounds substituted with bidentate ligands in the axial position is described. Using strongly chelating oxygen or sulfur donor ligands, the reaction of PcTiO with chelating agents leads to the formation of PcTiX complexes with X ≡ oxalate [Formula: see text], catecholate [Formula: see text], dithiocatecholate [Formula: see text], 2,3-dihydroxynaphthalene [Formula: see text] and other functionalized catechols (2c–2h). The new compounds possess an enhanced solubility in comparison to PcTiO .

scholarly journals The Evolution of Catalysis for Alkyd Coatings: Responding to Impending Cobalt Reclassification with Very Active Iron and Manganese Catalysts, Using Polydentate Nitrogen Donor Ligands

Catalysts ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 825 ◽  
Author(s):  
Simpson ◽  
Maaijen ◽  
Roelofsen ◽  
Hage
Keyword(s):  
Active Species ◽  
Donor Ligands ◽  
Nitrogen Donor Ligands ◽  
Metal Centers ◽  
Alkyd Resins ◽  
Human Contact ◽  
Unique Reaction ◽  
Nitrogen Donor ◽  
Metal Soaps ◽  
New Compounds

Autoxidation processes to achieve curing of alkyd resins in paints, inks, and coatings are ubiquitous in many applications. Cobalt soaps have been employed for these applications for many decades and most of the paint and ink alkyd resin formulations have been optimized to achieve optimal benefits of the cobalt soaps. However, cobalt soaps are under increased scrutiny because of likely reclassification as carcinogenic under REACH (Registration, Evaluation, Authorisation, and Restrictions of Chemicals) legislation in Europe. This is critical, since such coatings are available for regular human contact. Alternative manganese- and iron-based siccatives have been developed to address this need for over a decade. They often show very high curing activity depending on the organic ligands bound to the metal centers. Recently, new classes of catalysts and modes of application have been published or patented to create safe paints, whilst delivering performance benefits via their unique reaction mechanisms. Besides the use of well-defined, preformed catalysts, paint formulations have also been developed with mixtures of metal soaps and ligands that form active species in-situ. The change from Co-soaps to Mn- and Fe-based siccatives meant that important coating issues related to radical-based curing, such as skinning, had to be rethought. In this paper we will review the new catalyst technologies and their performance and modes of action, as well as new compounds developed to provide anti-skinning benefits.

2,2,3,3-Tetrafluoropropoxy substituted oxo-titanium phthalocyanines axially ligated with common MALDI matrix materials

2013 ◽  
Vol 17 (06n07) ◽  
pp. 548-554 ◽  
Author(s):  
Deniz Kutlu Tarakci ◽  
İlke Gürol ◽  
Vefa Ahsen
Keyword(s):  
Chlorogenic Acid ◽  
Caffeic Acid ◽  
Elemental Analysis ◽  
Ellagic Acid ◽  
Donor Ligands ◽  
Spectroscopic Techniques ◽  
H Nmr ◽  
Oxygen Donor ◽  
Ft Ir ◽  
New Compounds

The synthesis of tetra and octa 2,2,3,3-tetrafluoropropoxy substituted oxo-titanium phthalocyanines (TiOPc) are reported. Using strongly chelating oxygen donor ligands, the reactions of TiOPc with catecholate (1a, 2a), 4-nitrocatecholate (1b, 2b) and caffeic acid (1c, 2c), ellagic acid (1d, 2d) and chlorogenic acid (1e, 2e) are described. The new compounds were characterized by mass, 1 H NMR, FT-IR, and UV-vis spectroscopic techniques as well as elemental analysis.

Einige neue kristallisierte 7.7.8.8-Tetracyanochinondimethan(TCNQ)-Verbindungen mit Tetramminplatin(II)-Dikationen als Gegenionen.

1976 ◽  
Vol 31 (10) ◽  
pp. 1322-1325 ◽  
Author(s):  
H. Endres ◽  
H. J. Keller ◽  
W. Moroni ◽  
D. Nöthe
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Donor Ligands ◽  
Formula Unit ◽  
Sharp Transition ◽  
Nitrogen Donor Ligands ◽  
Nitrogen Donor ◽  
New Compounds ◽  
High Temperature Modification ◽  
Tcnq Molecule

New compounds of stoichiometry [Pt(II)L2](TCNQ)2, [Pt(II)L2](TCNQ)3 and [Pt(II)L2](TCNQ)4 (with L = one bidentate or two monodentate neutral nitrogen donor ligands like ethylenediamine (en), 1,10-phenanthroline (phen) or ammonia) have been prepared and characterized. The complexes of stoichiometry [Pt(II)L2](TCNQ)2 with only negatively charged TCNQ- units have relatively low conductivities (in the range of 10-7—10-8 Ω-1 cm-1) while the compounds [Pt(II)L2](TCNQ)3 containing one neutral TCNQ molecule per formula unit (“complex TCNQ-salts”) conduct much better (in the range of 10-2—10-3 [Ω-1 · cm-1] for pellets). Most of them show appreciable deviations from a Curie law behaviour. A sharp transition from an antiferromagnetic low temperature to a paramagnetic high temperature modification can be observed for [Pt(II)dipy2](TCNQ)2 (dipy = 2,2′-dipyridyl) at 87°C.

Structure of Two New Compounds of Copper(I) Iodide with N-Donor and P-Donor Ligands

2018 ◽  
Vol 59 (4) ◽  
pp. 943-948 ◽  
Author(s):  
A. Aguirrechu-Comerón ◽  
R. Hernández-Molina ◽  
J. González-Platas
Keyword(s):  
Donor Ligands ◽  
New Compounds

Crystal chemistry of high-Tc superconductors

1990 ◽  
Vol 48 (4) ◽  
pp. 1118-1119
Author(s):  
Maryvonne Hervieu
Keyword(s):  
Oxygen Deficiency ◽  
Large Family ◽  
Copper Oxides ◽  
High Tc Superconductors ◽  
High Tc ◽  
Single Mechanism ◽  
Square Planar ◽  
History Of ◽  
Bismuth Cuprates ◽  
New Compounds

Four years after the discovery of superconductivity at high temperature in the Ba-La-Cu-O system, more than thirty new compounds have been synthesized, which can be classified in six series of copper oxides: La2CuO4 - type oxides, bismuth cuprates, YBa2Cu3O7 family, thallium cuprates, lead cuprates and Nd2CuO4 - type oxides. Despite their quite different specific natures, close relationships allow their structures to be simply described through a single mechanism. The fifth first families can indeed be described as intergrowths of multiple oxygen deficient perovskite slabs with multiple rock salt-type slabs, according to the representation [ACuO3-x]m [AO]n.The n and m values are integer in the parent structures, n varying from 0 to 3 and m from 1 to 4; every member of this large family can thus be symbolized by [m,n]. The oxygen deficient character of the perovskite slabs involves the existence or the co-existence of several types of copper environment: octahedral, pyramidal and square planar.Both mechanisms, oxygen deficiency and intergrowth, are well known to give rise easily to nonstoichiometry phenomena. Numerous and various phenomena have actually been characterized in these cuprates, strongly depending on the thermal history of the samples.

Evaluation of New Compounds for Opioid Activity: Annual Report (1993)

1994 ◽  
Author(s):  
J. C. Woods ◽  
◽  
C. P. France ◽  
F. Medzihradsky ◽  
C. B. Smith ◽  
...  
Keyword(s):  
Annual Report ◽  
Opioid Activity ◽  
New Compounds
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