The Synthesis and Structure of a Scandium Nitrate Hydroxy-bridged Dimeric Complex Supported by Bipyridyl Ligands

Paul Raithby; Simon A. Cotton; Stephanie Schiffers; Simon Teat; John Warren

doi:10.3390/molecules27062024

The Synthesis and Structure of a Scandium Nitrate Hydroxy-bridged Dimeric Complex Supported by Bipyridyl Ligands

Paul Raithby, Simon A. Cotton, Stephanie Schiffers, Simon Teat, John Warren

Research output: Contribution to journal › Article › peer-review

2 Citations (SciVal)

Abstract

The current discussion on whether scandium, yttrium and lanthanum should represent Group 3 in the Periodic Table or whether lutetium should replace lanthanum in the group has prompted us to further explore the structural chemistry of the Group 3 elements and compare the coordination numbers and coordination geometries adopted. The steric and electronic properties of the coordinated ligands have a major influence on the structures adopted. We report the synthesis and crystal structure determination of an unusual dinuclear scandium complex [(bipy)(NO ₃) ₂Sc(µ-OH) ₂Sc(NO ₃) ₂ (bipy)] obtained by the reaction of hydrated scandium nitrate with 2,2′-bipyridyl (bipy) in either ethanol or nitromethane. The crystal structure of the complex shows that the scandium centers are eight coordinate, and the structure obtained contrasts with related complexes found in the lanthanide series [Ln(bipy) ₂ (NO ₃) ₃ ] and [Ln(phen) ₂ (NO ₃) ₃ ] (phen = phenanthroline) and in [M(terpy)(NO ₃) ₃ ] (M = Sc, Er–Lu), where these complexes are all mononuclear.

Original language	English
Article number	2024
Journal	Molecules
Volume	27
Issue number	6
DOIs	https://doi.org/10.3390/molecules27062024
Publication status	Published - 21 Mar 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Funding

The Synthesis and Structure of a Scandium Nitrate Hydroxy-Bridged Dimeric Complex Supported by Bipyridyl Ligands † We are grateful to the Engineering and Physical Sciences Research Council (UK) for a studentship to SS (EP/D072859/1) and for a Senior Fellowship to PRR (EP/D072859/1). We thank Louise Slope for obtaining the infrared spectrum.

Funders	Funder number
Louise Slope
Engineering and Physical Sciences Research Council	EP/D072859/1

Keywords

Crystal structure analysis
Scandium(III)
Nitrate complexes
hydroxyl groups
Eight coordinate
hydroxy group
scandium complex
eight coordinate complex
crystal structure
nitrate complex

ASJC Scopus subject areas

Analytical Chemistry
Chemistry (miscellaneous)
Molecular Medicine
Pharmaceutical Science
Drug Discovery
Physical and Theoretical Chemistry
Organic Chemistry

Access to Document

10.3390/molecules27062024Licence: CC BY

Cite this

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title = "The Synthesis and Structure of a Scandium Nitrate Hydroxy-bridged Dimeric Complex Supported by Bipyridyl Ligands",

abstract = "The current discussion on whether scandium, yttrium and lanthanum should represent Group 3 in the Periodic Table or whether lutetium should replace lanthanum in the group has prompted us to further explore the structural chemistry of the Group 3 elements and compare the coordination numbers and coordination geometries adopted. The steric and electronic properties of the coordinated ligands have a major influence on the structures adopted. We report the synthesis and crystal structure determination of an unusual dinuclear scandium complex [(bipy)(NO 3) 2Sc(µ-OH) 2Sc(NO 3) 2 (bipy)] obtained by the reaction of hydrated scandium nitrate with 2,2′-bipyridyl (bipy) in either ethanol or nitromethane. The crystal structure of the complex shows that the scandium centers are eight coordinate, and the structure obtained contrasts with related complexes found in the lanthanide series [Ln(bipy) 2 (NO 3) 3 ] and [Ln(phen) 2 (NO 3) 3 ] (phen = phenanthroline) and in [M(terpy)(NO 3) 3 ] (M = Sc, Er–Lu), where these complexes are all mononuclear.",

keywords = "Crystal structure analysis, Scandium(III), Nitrate complexes, hydroxyl groups, Eight coordinate, hydroxy group, scandium complex, eight coordinate complex, crystal structure, nitrate complex",

author = "Paul Raithby and Cotton, \{Simon A.\} and Stephanie Schiffers and Simon Teat and John Warren",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors. Licensee MDPI, Basel, Switzerland.",

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AU - Raithby, Paul

AU - Cotton, Simon A.

AU - Schiffers, Stephanie

AU - Teat, Simon

AU - Warren, John

PY - 2022/3/21

Y1 - 2022/3/21

N2 - The current discussion on whether scandium, yttrium and lanthanum should represent Group 3 in the Periodic Table or whether lutetium should replace lanthanum in the group has prompted us to further explore the structural chemistry of the Group 3 elements and compare the coordination numbers and coordination geometries adopted. The steric and electronic properties of the coordinated ligands have a major influence on the structures adopted. We report the synthesis and crystal structure determination of an unusual dinuclear scandium complex [(bipy)(NO 3) 2Sc(µ-OH) 2Sc(NO 3) 2 (bipy)] obtained by the reaction of hydrated scandium nitrate with 2,2′-bipyridyl (bipy) in either ethanol or nitromethane. The crystal structure of the complex shows that the scandium centers are eight coordinate, and the structure obtained contrasts with related complexes found in the lanthanide series [Ln(bipy) 2 (NO 3) 3 ] and [Ln(phen) 2 (NO 3) 3 ] (phen = phenanthroline) and in [M(terpy)(NO 3) 3 ] (M = Sc, Er–Lu), where these complexes are all mononuclear.

AB - The current discussion on whether scandium, yttrium and lanthanum should represent Group 3 in the Periodic Table or whether lutetium should replace lanthanum in the group has prompted us to further explore the structural chemistry of the Group 3 elements and compare the coordination numbers and coordination geometries adopted. The steric and electronic properties of the coordinated ligands have a major influence on the structures adopted. We report the synthesis and crystal structure determination of an unusual dinuclear scandium complex [(bipy)(NO 3) 2Sc(µ-OH) 2Sc(NO 3) 2 (bipy)] obtained by the reaction of hydrated scandium nitrate with 2,2′-bipyridyl (bipy) in either ethanol or nitromethane. The crystal structure of the complex shows that the scandium centers are eight coordinate, and the structure obtained contrasts with related complexes found in the lanthanide series [Ln(bipy) 2 (NO 3) 3 ] and [Ln(phen) 2 (NO 3) 3 ] (phen = phenanthroline) and in [M(terpy)(NO 3) 3 ] (M = Sc, Er–Lu), where these complexes are all mononuclear.

KW - Crystal structure analysis

KW - Scandium(III)

KW - Nitrate complexes

KW - hydroxyl groups

KW - Eight coordinate

KW - hydroxy group

KW - scandium complex

KW - eight coordinate complex

KW - crystal structure

KW - nitrate complex

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U2 - 10.3390/molecules27062024

DO - 10.3390/molecules27062024

M3 - Article

SN - 1420-3049

VL - 27

JO - Molecules

JF - Molecules

IS - 6

M1 - 2024

ER -

The Synthesis and Structure of a Scandium Nitrate Hydroxy-bridged Dimeric Complex Supported by Bipyridyl Ligands

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Senior Fellowship - TIME RESOLVED CRYSTALLOGRAPHY

Cite this

The Synthesis and Structure of a Scandium Nitrate Hydroxy-bridged Dimeric Complex Supported by Bipyridyl Ligands

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Projects

Senior Fellowship - TIME RESOLVED CRYSTALLOGRAPHY

Cite this