Two-Step Spin-Transition Iron(III) Compound with a Wide [High Spin-Low Spin] Plateau

Tang, Jinkui; Costa, José Sánchez; Smulders, Simon; Molnár, Gábor; Bousseksou, Azzedine; Teat, Simon J.; Li, Yangguang; Albada, Gerard A. van; Gámez, Patrick; Reedijk, Jan

doi:10.1021/ic801973x

Cited by 74 publications

(44 citation statements)

References 46 publications

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“…Direct hydrogen bonding between spin-crossover centres in a crystal would be expected to transmit cooperativity most efficiently. Compounds where such direct hydrogen bonding may play a role in producing notably cooperative spin-transitions include [Fe(Im) 2 (L 1 )] (Section 3.2), 152 [Fe(5,5 0 -di{nitro}saltrien)] and its derivatives (Section 2.3.1), 67,68 [Fe(mph) 2 ]ClO 4 (Hmph = 2-methoxy-6-{pyridine-2-ylhydrazonomethyl}phenol) 173 174 However, there are at least as many examples of materials with comparable amounts of inter-complex hydrogen bonding, but weaker cooperativity. 53,85,87,136,175 Hydrogen bonding between a complex and anions or lattice solvent is more common, but might be expected to have a weaker influence on communication between the complex molecules in a crystal.…”

Section: Cooperativity Mediated By Crystallographic Disordermentioning

confidence: 99%

Structure:function relationships in molecular spin-crossover complexes

2011

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Spin-crossover compounds are becoming increasingly popular for device and sensor applications, and in soft materials, that make use of their switchable colour, paramagnetism and conductivity. The de novo design of new solid spin-crossover compounds with pre-defined switching properties is desirable for application purposes. This challenging problem of crystal engineering requires an understanding of how the temperature and cooperativity of a spin-transition are influenced by the structure of the bulk material. Towards that end, this critical review presents a survey of molecular spin-crossover compounds with good availability of crystallographic data. A picture is emerging that changes in molecular shape between the high- and low-spin states, and the ability of a lattice to accommodate such changes, can play an important role in determining the existence and the cooperativity of a thermal spin-transition in the solid state (198 references).

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Section: Cooperativity Mediated By Crystallographic Disordermentioning

confidence: 99%

Structure:function relationships in molecular spin-crossover complexes

2011

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“…This query signature was subsequently uploaded to the Connectivity Map (cmap), to find other compounds with similar mechanism of action. The VLX50 signature showed strongest similarity to 2-hydroxy-3-methoxybenzaldehyde pyridin-2-ylhydrazone, ciclopiroxamine, and deferoxamine, all known to be potent iron chelators [25][26][27] (Fig. 5A).…”

Section: Vlx 50 Is Identified As An Iron Depleting Agentmentioning

confidence: 99%

Phenotype-based drug screening in primary ovarian carcinoma cultures identifies intracellular iron depletion as a promising strategy for cancer treatment

Gullbo

Fryknäs

Rickardson

et al. 2011

Biochemical Pharmacology

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. The results indicate the feasibility of using PCPTC for cancer drug screening and that intracellular iron depletion could be a potentially important strategy for cancer therapy.

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“…1 Particularly interesting and still comparatively rare is stepped SCO in which the SCO occurs in two or more steps. [11][12][13][14][15][16][17][18] As there are more steps, more spin states are accessible potentially resulting in devices of increased complexity and broader applicability.In addition to greater potential functionality the nature of stepped SCO is also of interest as understanding how this occurs aids in the design of better systems. Thus, in mononuclear systems stepped SCO is generally due to the presence of independent metal centres which undergo SCO at different temperatures.…”

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confidence: 99%