1,4-Diferrocenyl-2-methylpiperazine-1,4-diium bis(trifluoroacetate)

1,4-Diferrocenyl-2-methyl­piperazine-1,4-diium bis­(trifluoro­acetate)

In the title compound, [Fe(2)(C(5)H(5))(2)(C(17)H(24)N(2))](CF(3)COO)(2), the cation possesses a crystallographically imposed inversion centre. The methyl group is disordered over two positions of equal occupancy. The Fe-C bond lengths to the two cyclo-penta-diene rings vary from 2.025 (6) to 2.044 (6) Å. Inter-molecular N-H⋯O and C-H⋯O hydrogen bonds link the cations and anions into a three-di...

BA 14-2-bradley

This paper details the comparison of a built coupled volume concert hall and a computergenerated model of the hall. Coupled volume spaces typically have an auxiliary volume connected to the main volume through an acoustically transparent aperture. In this type of space, architectural parameters such as volume size and surface absorption can be designed to produce a non-linear reverberant decay,...

Cover Vol.14, No.2 April 2017

Tbit_a_465584 14..14 ++

This case study provides an in-depth analysis of Siemens' lessons learned when implementing knowledge management. For the analysis of the case-study data, we use established tools from the marketing literature, and integrate these with the change management literature. The aim is to provide a rich-yet-parsimonious conceptualisation of Siemens' lessons learned in dealing with two distinct implem...

A14 14..14

Pasco et al (pp. 322–326) investigated the role of tobacco smoking as a risk factor for major depressive disorder, using data from an Australian population-based sample of women. They found both cross-sectional and longitudinal evidence for an association between smoking and depression, particularly among heavy smokers. Using a range of brain imaging techniques, de Win et al (pp. 289–296) found...