The first mononuclear PtIII complex. Molecular structures of (NBu4)[PtIII(C6Cl5)4] and of its parent compound {NBu4}2[PtII(C6Cl5)4]·2CH2Cl2

(NBu4)[PtIII(C6Cl5)4], fully characterized by crystallographic, spectral, and magnetic measurements has been isolated by oxidation with halogens or TICl3 of the parent compound (NBu4)2[PtII(C6CL5)4], which has also been analysed by X-ray crystallography

Synthesis and reactivity of [NBu4]+[Pt(III)(C6Cl5)4]-: molecular structures of [NBu4]2+[Pt(C6Cl5)4]2-.cntdot.2CH2Cl2, [NBu4]+[Pt(III)(C6Cl5)4]- and [NBu4]+[Pt(C6Cl5)4(NO)]-

The synthesis and chemical and spectral characterizations of compounds [ N B ~ ~ ] ~ + [ P t ( c ~(lc)l,~ ) ~ ] ~ - [NBu ~ ]+[ P ~ (C~(C21~, [~N)B~ ]u-~ ]+[P~(C~CI~)(~31N, aOn]d- [NBU~]+[P~(C~C~,)~(4() ParPe~ d~es)c]ri-be d in this paper. By far the most intriguing complex is 2, the first mononuclear Pt(II1) complex ever reported. [NBu4]+[Pt(C&l5),]-( 2) can be prepared by reacting [NBu4]2+[Pt(C,C15)4]2(-1 ) with various oxidants such as C12, Br2, 12, or T1C13 and also by the electrochemical oxidation of 1 at 0.7 V in CH2C12. Compound 2 is stable to air and moisture, shows very limited reactivity, and has magnetic properties consistent with a 1/2 spin system. Complex 2 reacts with NO gas to give the adduct [NBu4]'[Pt(C6Cl5),(NO)]- (3), which can also be made directly from 1 by reaction with [NO]+[ClO,]- under an atmosphere at NO. Attempts to make the corresponding fluorine analogue of the Pt(II1) complex [NBu4]+[Pt(C6F,),]w- ere unsuccessful. The X-ray structures of complexes 1-3 have been determined and are also reported in this aper. Complex 3 crystallizes in the tetragonal space group P4,lnbc (no. 1331, with a = b = 14.948 (6) c = 23.488 (9) 8, V = 5248 (3) %r3, and p(calcd) = 1.85 g cm-3 for 2 = 4. The structure has been refined to a final agreement factor of R = 6.6%

Modular design: Product design opportunities and a case analysis

In recent decades, modular design has been fully developed due to its important role in the current industrial evolution. The numerous advantages offered by its application to product design has made companies from different sectors opt for its use to solve particular needs. Many authors have studied modular design from a theoretical viewpoint, but it is necessary to learn about its application by studying real cases that allow us to understand what the object of its application is, the different methods used to obtain modular products and the results obtained in each case. Accordingly, we can know modular design’s most characteristic features and benefits, the business of its application, what its evolution has been, and what path it is currently on as part of the current industrial evolution. To do this, a case study research is carried out, which is divided into two parts. The first consists of a bibliographic review that focused on the main authors who studied modular design and documented real cases of its application, especially at the beginning of modular design in industry. The second focused on investigating the current cases that have not been previously documented, which shows how modular design is currently applied and how it evolves

Analysis of modular design applicable in prosumer scope. Guideline in the creation of a new modular design model

Modular design is the design based on independent and connectable modules to achieve product variety. It is an ideal tool that could facilitate the inclusion of prosumers in the creative process. However, its evolution has focused on product development and not on end users. The creation of a new modular design model for prosumers could respond to their needs while exploiting the advantages of modularity. The present work analyzes the applicability of modular design in the prosumer scope and defines a guideline for the creation of the new model. To this end, prosumer and modular design methods are collected and analyzed throughout the previously defined design process. The intersection between both terms is analyzed through a series of real cases and design methods that show what the objectives of prosumers are and if the present products and methods meet their needs. These results will establish the current and potential link between modular design and prosumers. Finally, the objectives and stages to develop the design model based on previous results are presented. The paper presents relevant findings such as the lack of methods in the conceptual design phases and a guideline to ensure that the prosumer benefits from modular design. © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/)

Review of product design and manufacturing methods for prosumers

Product design is a process developed by specialized profiles such as designers or engineers. For this reason, most of product design and/or manufacturing methods developed are aimed at experienced professionals. However, in the current social and technological context, we observe that the number of prosumers, users who partially produce the products they consume, is increasing. These users are involved in design, manufacturing or assembly phases of the product to obtain final results that respond to specific needs and desires. Given this emerging trend, we wonder if there are methodologies focused on these users in particular, both in the academic field and in practice. This work aims to clarify this issue through a review of research papers and real cases. The results obtained differentiate between the methodologies that have been defined in the academic field and those that have not been compiled but whose repeated use has agreed its application and existence in practice. The methodologies identified are analyzed in two tables that summarize how they are applied and what their main objective is. The results and conclusions offer both the scientific community and the prosumers a series of product design and manufacturing methods focused on non-specialized profiles

Validation of a New Evaluation Method of Modular Design Focused on the Prosumer

The modular design harbors a potential development in the prosumer scope that has hardly been previously exploited. Their joint application can lead to products focused on user participation through modular design. This work proposes and validates a concept evaluation metric in the design phases that meet these characteristics. To do this, 24 external designers and prosumers evaluate five products using this method. The results and conclusions contribute to the improvement of the method and provide information on how to approach it to the prosumers

Analysis and comparison of smart city initiatives

Complexity in cities is expected to become even higher in the short term, which implies the need to face new challenges. The Smart City (SC) model and its associate initiatives have become very popular for undertaking them but it is not often very clear what it really means. Starting with a previous classification of the initiatives developed under the SC model into two big categories, according to their approach to citizens, this paper aims to make a critical analysis of this model of city, and to propose the development of new initiatives for it based on Citizen-Centered Design methodologies. Living Labs, both as methodology and as organization, appear in this context as an interesting choice for developing initiatives with real citizen involvement along the entire design process, which it is expected to arise in later stages of research

Adoption of modular design by makers and prosumers. A survey

The growing tendency for end users to get involved in the design and manufacturing phase of their own products has led to the proliferation of makers and prosumers. The tools available for this have been adapted to be used by non-specialized users who seek to meet their own needs and wants. Modular design offers a series of advantages directly related to the needs of current users, but which has hardly been used to benefit them. Instead, its development has geared towards aspects that are hidden to the consumer, such as flexible production. This work presents a survey, part of a wider research, whose objective is to develop a methodological model for the prosumer to benefit from modular design. The survey was open for several months and was only aimed at makers, prosumers and designers. A dissemination plan was drawn up where the current communication channels of these users were taken into account. The results show what the current prosumer is like, what their needs are and how they relate to modular design. Finally, the conclusions provide information on how to develop a model proposal to ensure its correct usability and acceptance

Conceptualization of modular products for the prosumer. A design workshop

Modular design has proven to bring numerous advantages in the design and development of new products, but its relationship with the end user has been limited in practical scope. Previous studies analyze its applicability for prosumer users, but it has not yet been tested as a design method. This work presents a first application in a design workshop carried out during the conceptualization phase of a real project. The objective was to design a multifunction portable cart that complies with the characteristics of modular design and is focused on prosumers. This conceptualization was developed by designers and prosumers with the purpose of designing modular products for the prosumer. To do this, the key terms and the design method were explained to the participants. Subsequently, two group exercises were carried out to devise new applications and propose limitations and solutions. The workshop concludes with the individual conceptualization of the product, giving rise to 22 design concepts that were evaluated by the participants. Due to the lack of consensus, a second evaluation was carried out by the three coordinators of the workshop. The highest rated concept was fully evolved and developed, including manufacturing. The results offer conclusions on how the participants applied the method, what were the most applied characteristics of modular design, what manufacturing tools were proposed for prosumers and how to approach the method to non-specialized users

High Efficiency Si Solar Cells Characterization Using

Abstract. Impedance Spectroscopy has been used to analyse commercial Si photovoltaic solar cells, to obtain information about minority carrier lifetimes, series and parallel resistances, and acceptor impurity densities. Silicon solar cells efficiencies ranging between 17 and 18% from different manufacturers have been analysed obtaining differences mainly in the electron lifetimes and doping densities. Relations between these parameters and DC curves are discussedMinisterio de Economía y Competitividad under project TEC2013-4835-