Dr Ann Chippindale

Stipendiary Lecturer in Inorganic Chemistry
Subjects: 
Chemistry

Detailed Biography

Affiliations

  • Fellow of the Royal Society of Chemistry
  • Member of the British Crystallographic Association
  • Member of the Greater Chapter, Pusey House, Oxford

Teaching Activities

Teach all aspects of Inorganic Chemistry

Research Interests

My aim is to prepare solid-state materials with interesting structural, chemical and physical properties. One area of research involves the synthesis and structural characterisation of 'open-framework', microporous materials - materials with structures containing regular arrays of pores or channels of suitable size to accommodate small molecules - with the idea of performing chemical reactions inside the pores. A number of microporous materials occur in Nature, including a class of aluminosilicate minerals called 'zeolites', which, by virtue of their open structures, have a range of uses from water softeners in washing powders to catalysts in petrochemical refining. I am exploring open-framework metal phosphates, which are synthetic materials that can mimic, and in some cases, outperform the natural zeolites.

I am currently investigating transition-metal cyanides (in collaboration with Dr SJ Hibble, Oxford). The first example of such a material is ‘Prussian Blue’, made in 1706, originally used as a pigment and now being investigated for use in batteries and hydrogen storage. Many cyanides show 'negative thermal expansion' (NTE) which means that they contract when they are heated. Part of our work involves studying and trying to explain this curious behaviour.

Underpinning all my work is the need to know the detailed structures of the materials on the atomic scale. This can be achieved using crystallographic techniques, such as X-ray and neutron diffraction. Experiments are carried out either 'in house' or at international facilities, such as the X-ray synchrotron at the Diamond Light Source, and the neutron sources at ISIS and the Institut Laue Langevin in Grenoble, France.

Recent Publications

1. "Chemistry and structure by design: ordered CuNi(CN)4 sheets with Cu(II) in a square-planar environment", A.M. Chippindale, S.J. Hibble, E. Marelli, E.J. Bilbe, A.C. Hannon and M. Zbiri, Dalton Trans., 44, 12502 (2015).

2. "Local and Average Structure in Zinc Cyanide: Towards an Understanding of the Atomistic Origin of NTE", S.J. Hibble, A.M. Chippindale, E. Marelli, S. Kroeker, V.K. Michaelis, B.J. Greer, P.M. Aguiar, E.J. Bilbé, E.R. Barney and A.C. Hannon, J.A.C.S., 135, 16478 (2013).

3. "Mixed Copper, Silver, and Gold Cyanides, (MxM′1–x)CN: Tailoring Chain Structures To Influence Physical Properties", A.M. Chippindale, S.J. Hibble, E.J. Bilbé, E. Marelli, A.C. Hannon, C. Allain, R. Pansu, and F. Hartl,  J.A.C.S., 134, 16387 (2012).

 

 

Publications

1. "Chemistry and structure by design: ordered CuNi(CN)4 sheets with Cu(II) in a square-planar environment", A.M. Chippindale, S.J. Hibble, E. Marelli, E.J. Bilbe, A.C. Hannon and M. Zbiri, Dalton Trans., 44, 12502 (2015).

2. "Local and Average Structure in Zinc Cyanide: Towards an Understanding of the Atomistic Origin of NTE", S.J. Hibble, A.M. Chippindale, E. Marelli, S. Kroeker, V.K. Michaelis, B.J. Greer, P.M. Aguiar, E.J. Bilbé, E.R. Barney and A.C. Hannon, J.A.C.S., 135, 16478 (2013).

3. "Mixed Copper, Silver, and Gold Cyanides, (MxM′1–x)CN: Tailoring Chain Structures To Influence Physical Properties", A.M. Chippindale, S.J. Hibble, E.J. Bilbé, E. Marelli, A.C. Hannon, C. Allain, R. Pansu, and F. Hartl,  J.A.C.S., 134, 16387 (2012).


4. "Interpenetrating copper-silver cyanometallate networks: polymorphs and topological isomers", A.M. Chippindale, S.M. Cheyne and S.J. Hibble, Angew. Chemie Int. Ed., 44, 7942 (2005).


5. "Surprises from a simple material - the structure and properties of nickel cyanide", S.J. Hibble, A.M. Chippindale, A.H. Pohl and A.C. Hannon, Angew. Chemie Int. Ed., 46, 7116 (2007).


6. "Helices, Chirality and Interpenetration: the Versatility and Remarkable Interconversion of Silver-Copper Cyanide Frameworks", A.M. Chippindale and S.J. Hibble, J.A.C.S., 131, 12736 (2009).


7. "The Structures of Pd(CN)2 and Pt(CN)2: Intrinsically Nanocrystalline Materials?" S.J. Hibble, A.M. Chippindale, E.J. Bilbé, E. Marelli, P.J.F. Harris and A.C. Hannon, Inorg. Chem. 50, 104 (2011).