Readily prepared metallo-supramoleculare triple-helicates designed to exhibit spin-crossover behaviour

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Readily prepared metallo-supramoleculare triple-helicates designed to exhibit spin-crossover behaviour. / Tuna, F; Lees, FR; Clarkson, GJ; Hannon, Michael.

In: Chemistry: A European Journal, Vol. 10, 01.01.2004, p. 5737-5750.

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@article{c3e8b516fadf49259660bad6575ab822,
title = "Readily prepared metallo-supramoleculare triple-helicates designed to exhibit spin-crossover behaviour",
abstract = "New dinuclear supramolecular cylinders have been designed to exhibit spin-crossover behaviour, a form of molecular bistability. This has been achieved within the framework of our imine-based approach to supramolecular architecture by switching from pyridylimine systems to imidazolimines. Spin-crossover behaviour is achieved while retaining the simplicity and ease-of-synthesis of our molecular design. The imidazole groups used also introduce additional NH groups that engage in hydrogen-bonding to anions and solvents. In the case of the iron(II) tetrafluoroborate complex this hydrogen bonding links supramolecular cylinders into an extended two-dimensional array. Consistent with this, a sharper spin-crossover transition is observed for this compound than for the corresponding hexafluorophosphate salt. More subtle anion effects are indicated in the perchlorate salt which gives a two-step spin conversion, thereby displaying tristability.",
author = "F Tuna and FR Lees and GJ Clarkson and Michael Hannon",
year = "2004",
month = jan,
day = "1",
doi = "10.1002/chem.200400518",
language = "English",
volume = "10",
pages = "5737--5750",
journal = "Chemistry: A European Journal",
issn = "0947-6539",
publisher = "Wiley-VCH Verlag",

}

RIS

TY - JOUR

T1 - Readily prepared metallo-supramoleculare triple-helicates designed to exhibit spin-crossover behaviour

AU - Tuna, F

AU - Lees, FR

AU - Clarkson, GJ

AU - Hannon, Michael

PY - 2004/1/1

Y1 - 2004/1/1

N2 - New dinuclear supramolecular cylinders have been designed to exhibit spin-crossover behaviour, a form of molecular bistability. This has been achieved within the framework of our imine-based approach to supramolecular architecture by switching from pyridylimine systems to imidazolimines. Spin-crossover behaviour is achieved while retaining the simplicity and ease-of-synthesis of our molecular design. The imidazole groups used also introduce additional NH groups that engage in hydrogen-bonding to anions and solvents. In the case of the iron(II) tetrafluoroborate complex this hydrogen bonding links supramolecular cylinders into an extended two-dimensional array. Consistent with this, a sharper spin-crossover transition is observed for this compound than for the corresponding hexafluorophosphate salt. More subtle anion effects are indicated in the perchlorate salt which gives a two-step spin conversion, thereby displaying tristability.

AB - New dinuclear supramolecular cylinders have been designed to exhibit spin-crossover behaviour, a form of molecular bistability. This has been achieved within the framework of our imine-based approach to supramolecular architecture by switching from pyridylimine systems to imidazolimines. Spin-crossover behaviour is achieved while retaining the simplicity and ease-of-synthesis of our molecular design. The imidazole groups used also introduce additional NH groups that engage in hydrogen-bonding to anions and solvents. In the case of the iron(II) tetrafluoroborate complex this hydrogen bonding links supramolecular cylinders into an extended two-dimensional array. Consistent with this, a sharper spin-crossover transition is observed for this compound than for the corresponding hexafluorophosphate salt. More subtle anion effects are indicated in the perchlorate salt which gives a two-step spin conversion, thereby displaying tristability.

UR - http://www.scopus.com/inward/record.url?scp=9244231758&partnerID=8YFLogxK

U2 - 10.1002/chem.200400518

DO - 10.1002/chem.200400518

M3 - Article

C2 - 15472936

VL - 10

SP - 5737

EP - 5750

JO - Chemistry: A European Journal

JF - Chemistry: A European Journal

SN - 0947-6539

ER -