The structure of tetraaqua(2,2,3,3-tetrafluorosuccinato)zinc(II)

Karipides, A.

doi:10.1107/s056774088000684x

Cited by 7 publications

(4 citation statements)

References 8 publications

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“…Examples of polymeric complexes involving carboxylate ligands bearing additional donor atoms ( a ) a cobalt(l1) complex of pyridine-2-carboxylic acid[8] and (b) a zinc coniplex of 2.2J.3tetrafluorosuccinic acid[9].…”

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confidence: 99%

Oligomeric Metal Complexes

Constable¹

1998

Electronic Materials: The Oligomer Approach

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Transition metal centres offer an obvious way for the introduction of charge centres or charge-carrying centres into new materials. The coordination of metal centres to ligands containing two or more distinct metal-binding domains provides a phenomenological and methodological approach to the assembly of designed novel materials. The limitations of this approach are currently being probed, and this chapter will provide an overview of the area. The emphasis will be upon synthesis rather than the properties of the materials and, in particular, the controlled assembly of materials of known nuclearity and topology.In order to keep this chapter to a reasonable length, the coverage will be restricted in a number of ways. Firstly, materials which are 'truly' polymeric will only be discussed if there are good solid state structural data to support their formulation and structural integrity. Secondly, the emphasis will be placed upon systems in which the ligand predisposes the assembly towards a particular structure. This latter restriction means that little will be said about halide. oxy and hydroxy bridged systems. Furthermore, it will be assumed for the most part that the ligands involved play some r61e in the electronic communication between metal centres and 'insulating' spacers will not be discussed in detail. In particular, the design of extended molecular materials will be discussed.The methods adopted involve the use of bridging ligands containing two or more metal-binding domains. A metal-binding domain is usually readily recognized as a conventional ligand type (for example, a phosphine, carboxylate, thiolate or oligopyridine). The linking together of the domains utilises conventional organic synthetic methods. In an ideal case, simply mixing the bridging ligand with an appropriate metal source, usually, but not necessarily in homogeneous solution, results in the formation of the desired oligomeric system. This process is shown in Fig. 1 [l].It is immediately apparent that a number of features need to be carefully controlled if the desired assembly process is to occur.The stability of the desired assembly must be maximised in order to drive the system towards the correct (i.e. wanted) product. The simplest way to achieve this is by the use of multidentate chelating ligands rather than monodentate donors. For this reason, systems based upon chloride, oxy or hydroxy bridges are not covered in detail in this article, because, although they possess extremely interesting properties, it is not usually possible, n priori, to predict exactly what material, morphology and topology will be obtained.The metal-binding domain can be tailored to the desired metal centre. This may be at a gross structural level by simply matching up the number of donor atoms to

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confidence: 99%

Oligomeric Metal Complexes

Constable¹

1998

Electronic Materials: The Oligomer Approach

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“…The conformational differences between succinic or adipic acid and their perfluorinated analogues amount to approximately 7−12 kJ mol −1 , comparable to the strength of a moderate hydrogen bond . Different conformational preferences are reflected in pronounced changes in the structures of multicomponent crystals involving perfluorinated or hydrocarbon diacids, such as proton transfer to form a salt or a change in stoichiometric composition. , The similarity between conformations of fluorinated cocrystal formers observed in the solid state and those predicted for isolated molecules implies a valuable role of fluorinated molecules as building blocks in crystal engineering of solid-state materials, including cocrystals and even open metal−organic frameworks. ,, In particular, the recent structural studies by Hulvey et al and database analyses by Wang et al strongly suggest that intramolecular factors studied herein can also induce differences in conformational preferences of hydrocarbon- and perfluorocarbon-based carboxylate ligands based on a more rigid aromatic backbone. We are now exploring the generality of fluorination as a means to control the conformation of molecules with flexible carbon backbones.…”

Section: Discussionmentioning

confidence: 94%

“…(a) Definition of molecular planes π 1 , π 2 , and π 3 in Hfsu molecule or a related anionic species. Results of CSD analysis: (b) distribution of π 1 −π 2 angles for all structures involving Hfsu derivatives; (c) distribution of π 2 −π 3 angles for all structures involving Hfsu derivatives; (d) distribution of π 1 −π 3 angles for all structures involving Hfsu derivatives; (e) fragment of the structure AQFSZN illustrating conformational preferences of perfluorosuccinate dianion in a coordination polymer; (f) fragment of the structure ASULOP illustrating conformational preferences of perfluorosuccinate dianion in a hydrogen-bonded salt; (g) fragment of the structure NOFJUN illustrating conformational preferences of perfluorosuccinate dianion as a tetradentate ligand; and (h) fragment of the structure GEFPEN illustrating the conformational preferences of perfluorosuccinate dianion as a bidentate ligand in a discrete complex.…”

Section: Resultsmentioning

confidence: 99%

Effect of Fluorination on Molecular Conformation in the Solid State: Tuning the Conformation of Cocrystal Formers

Friščić

Reid

Day

et al. 2011

Crystal Growth & Design

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“…Thin films of ZnO:F have been deposited using spray pyrolysis, sol–gel spin coating, and sputtering . Gordon et al have studied the deposition of ZnO:F by CVD extensively and have deposited films initially using a multisource approach, that is, Et 2 Zn, EtOH, and C 3 F 6 and later using Et 2 Zn·TMEDA, EtOH, and C 6 H 5 C(O)F. The earlier precursors in particular grew high quality films with a very low sheet resistance of 5Ω/square and a visible absorption of 3%. , We have previously used organotin fluorocarboxylates to successfully deposit FTO, and have now attempted to use the same methodology for ZnO:F. While a search of the Cambridge Crystallographic database reveals numerous structures containing the Zn(O 2 CCF 3 ) moiety, only two reports concern more fluorinated carboxylic acid derivatives of zinc. , …”

Section: Introductionmentioning

confidence: 99%

Inorganic and Organozinc Fluorocarboxylates: Synthesis, Structure and Materials Chemistry

Johnson

Kingsley²,

Kociok‐Köhn

et al. 2013

Inorg. Chem.

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The organozinc fluorocarboxylates RZnO2CRf and RZnO2CRf·TMEDA, along with Zn(O2CRf)2·TMEDA (R = Me, Et; Rf = C2F5, C3F7) have been synthesized. The structures of EtZnO2C2F5 (5), EtZnO2C3F7 (7), EtZnO2C2F5·TMEDA (11), Zn(O2C2F5)2·TMEDA (13), along with products from the adventitious reaction with either O2 or H2O, Zn10Me4(OMe)4(O2CC2F5)12 (2), Zn9Et2(O2CC2F5)12(O)2 (6), Zn8Et4(OEt)4(O2CC3F7)6(O) (8), [Zn(O2CC3F7)2·TMEDA]2·H2O (15) have been determined. Thin films of oriented ZnO have been deposited on glass substrates by low-pressure chemical vapor deposition (LPCVD) using 3 and 10 as precursors, though no fluorine incorporation in the films was noted. LPCVD using 13 as precursor also yielded fluorine-free ZnO, but lacking the oriented growth observed using 3, 10. However, 5, which exhibits short intermolecular Zn···F contacts in the solid state, thermally decomposes to bulk ZnF2.

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The structure of tetraaqua(2,2,3,3-tetrafluorosuccinato)zinc(II)

Cited by 7 publications

References 8 publications

Oligomeric Metal Complexes

Oligomeric Metal Complexes

Effect of Fluorination on Molecular Conformation in the Solid State: Tuning the Conformation of Cocrystal Formers

Inorganic and Organozinc Fluorocarboxylates: Synthesis, Structure and Materials Chemistry

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