Structural characterization of Sr4Mg4H4[CoH5]3 shows the importance of support from polarizing counter ions to 3d transition metal hydrido complexes

JOURNAL OF ALLOYS AND COMPOUNDS

卷:579

Article

Fahlquist, Henrik¹  Kadir, Karim¹  Noreus, Dag¹ 

[1] Stockholm Univ, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden

关键词: Metal hydrides;    Transition metal alloys and compounds;    Chemical synthesis;    Crystal structure;   

DOI  :  10.1016/j.jallcom.2013.05.024

来源: Elsevier

【 摘 要 】

The structure of the title compound was refined from neutron powder diffraction data in the cubic space group P-43m (215). The unit cell contains one formula unit with 3 structurally equivalent [Co(I)H-5](4)-complexes as well as 4 interstitial hydride (H-) ions. The presence of the larger and less polarizing Sr2+ ions weakens the bond in the complexes and probably also the stability of the structure. Attempts to synthesize the corresponding Ba analogue failed in contrast to using smaller and more polarizing Ca2+ and Yb2+ counterions. (c) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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