catena-Poly[[bis­[1-(2-hydroxy­ethyl)-1H-tetra­zole-κN 4]copper(II)]-di-μ-chlorido]: a powder study

The crystal structure of the title polymeric complex, [CuCl2(C3H6N4O)2]n, was obtained by the Rietveld refinement from laboratory X-ray powder diffraction data collected at room temperature. The unique CuII ion lies on an inversion center and is in a slightly distorted octa­hedral coordination environment. In the hydroxy­ethyl group, all H atoms, the O atom and its attached C atom are disordered over two positions; the site occupancy factors are ca 0.6 and 0.4. The OH group is involved in an intra­molecular O—H⋯N hydrogen bond

Сучасна апаратура та обладнання систем «розумний будинок»

The article deals with modern "smart lady" systems for apartments, offices, hotels and other residential complexes. The main directions of automation of each of the systems presented. Lighting, climate, curtain control, audio / video control, remote control, energy management, condition monitoring, measurement and control of household appliances. The software for each of the presented systems will also be considered.В статье рассмотрены современные системы «умного дама» для квартир, офисов, отелей и прочих жилых комплексов. Основные направления автоматизации каждой из представленных систем. Управление освещением, климатом, шторами, управление аудио/видео, удаленное управление, энергетический менеджмент, мониторинг состояния, измерения и контроль бытовой техники. Также рассмотрено программное обеспечение для каждой из представленных систем.У статті розглянуті сучасні системи «розумного дама» для квартир, офісів, готелів та інших житлових комплексів. Основні напрямки автоматизації кожної з представлених систем. Управління освітленням, кліматом, шторами, управління аудіо/відео, дистанційне керування, енергетичний менеджмент, моніторинг стану, вимірювання і контроль побутової техніки. Також розглянуто програмне забезпечення для кожної з представлених систем

Autonomy of Economic Agents in Peer-to-Peer Systems

The transition from a traditional economy to a digital economy based on Web 3.0 and blockchain technologies is accompanied by some changes in the structure of relations between participants. Such changes relate to the blurring of the concept of the ultimate beneficiary and the center of responsibility in the case when certain digital categories are behind this or that type of relationship, devoid of the center of control traditional for the economic system. As a rule, such relations between participants have a high level of autonomy and a low level of control by the state or traditional economic organizations. Thus, autonomous economical agents, as completely independent actor, using peer-to-peer economy platforms have the potential to have a large impact on values and behavior in society. Understanding of the economical level of autonomy in peer-to-peer systems of such agents requires analysis of their role in such and design of the control mechanisms in order to determine the benefits from positive effects and at the same time mitigate negative consequences from possible mistakes. This requires a structured overview of the levels of agent autonomy and its impact on the existing system. The purpose of this article is to structure the study of economic agent autonomy in peer-to-peer systems, taking into account the possibilities of the digital environment. The article also provides an overview and analysis of the main technological developments in the field of autonomous economic agents and decentralized autonomous organizations, characteristics and framework of economic autonomy of the agents, taking into account digital environment of peer-to-peer digital systems

Synthesis, molecular and electronic structure of an incomplete cuboidal Re3S4 cluster with an anusual quadruplet ground state

A Re(IV) cluster complex [Re3(μ3-S)(μ-S)3(dppe)3Br3]+ with nine cluster skeletal electrons (CSE) and a quadruplet ground state has been prepared by treatment of [Re3S7Br6]Br with 1,2-bis(diphenylphosphino)ethane (dppe) in MeCN

Synthesis and Reactivity of a Cyclooctatetraene‐Like Polyphosphorus Ligand Complex [Cyclo‐P 8 ]

The thermolysis of Cp′′′Ta(CO)4 with white phosphorus (P4) gives access to [{Cp′′′Ta}2(μ,η2 : 2 : 2 : 2 : 1 : 1-P8)] (A), representing the first complex containing a cyclooctatetraene-like (COT) cyclo-P8 ligand. While ring sizes of n >6 have remained elusive for cyclo-Pn structural motifs, the choice of the transition metal, co-ligand and reaction conditions allowed the isolation of A. Reactivity investigations reveal its versatile coordination behaviour as well as its redox properties. Oxidation leads to dimerization to afford [{Cp′′′Ta}4(μ4,η2 : 2 : 2 : 2 : 2 : 2 : 2 : 2 : 1 : 1 : 1 : 1-P16)][TEF]2 (4, TEF=[Al(OC{CF3}3)4]−). Reduction, however, leads to the fission of one P−P bond in A followed by rapid dimerization to form [K@[2.2.2]cryptand]2[{Cp′′′Ta}4(μ4,η2 : 2 : 2 : 2 : 2 : 2 : 2 : 2 : 1 : 1 : 1 : 1-P16)] (5), which features an unprecedented chain-type P16 ligand. Lastly, A serves as a P2 synthon, via ring contraction to the triple-decker complex [{Cp′′′Ta}2(μ,η6 : 6-P6)] (B)

The Missing Parent Compound [(C 5 H 5 )Fe(η 5 ‐P 5 )]: Synthesis, Characterization, Coordination Behavior and Encapsulation

The so far missing parent compound of the large family of pentaphosphaferrocenes [CpFe(η5-P5)] (1 b) was synthesized by the thermolysis of [CpFe(CO)2]2 with P4 using the very high-boiling solvent diisopropylbenzene. It was comprehensively characterized by, inter alia, NMR spectroscopy, single crystal X-ray structure analysis, cyclic voltammetry and DFT computations. Moreover, its coordination behavior towards CuI halides was explored, revealing the unprecedented 2D polymeric networks [{CpFe(η5:1:1:1:1-P5)}Cu2(μ-X)2]n (2 a: X=Cl, 2 b: X=Br) and [{CpFe(η5:1:1-P5)}Cu(μ-I)]n (3) and even the first cyclo-P5-containing 3D coordination polymer [{CpFe(η5:1:1-P5)}Cu(μ-I)]n (4). The sandwich complex 1 b can also be incorporated in nano-sized supramolecules based on [Cp*Fe(η5-P5)] (1 a) and CuX (X=Cl, Br, I): [CpFe(η5-P5)]@[{Cp*Fe(η5-P5)}12(CuX)20-n] (5 a: X=Cl, n=2.4; 5 b: X=Br, n=2.4; 5 c: X=I, n=0.95). Thereby, the formation of the CuI-containing fullerene-like sphere 5 c is found for the first time

A Hydride‐Substituted Homoleptic Silylborate: How Similar is it to its Diborane(6)‐Dianion Isostere?

The B‐nucleophilic 9H‐9‐borafluorene dianion reacts with 9‐chloro‐9‐silafluorene to afford air‐ and moisture‐stable silylborate salts M[Ar2(H)B−Si(H)Ar2] (M[HBSiH], M=Li, Na). Li[HBSiH] and Me3SiCl give the B−pyridine adduct Ar2(py)B−Si(H)Ar2 ((py)BSiH) or the chlorosilane Li[Ar2(H)B−Si(Cl)Ar2] (Li[HBSiCl]) in C6H6‐pyridine or THF. In both cases, the first step is H− abstraction at the B center. The resulting free borane subsequently binds a py or thf ligand. While the py adduct is stable at room temperature, the thf adduct undergoes a 1,2‐H shift via the cyclic B(μ‐H)Si intermediate BHSi, which is afterwards attacked at the Si atom by a Cl− ion to give Li[HBSiCl]. DFT calculations were employed to support the proposed reaction mechanism and to characterize the electronic structure of BHSi. Treatment of Li[HBSiCl] with the N‐heterocyclic carbene IMe introduces the neutral donor at the Si atom and leads to Ar2(H)B−Si(IMe)Ar2 (HBSi(IMe)), a donor‐acceptor‐stabilized silylene

Organometallic-Organic Hybrid Polymers Assembled from Pentaphosphaferrocene, Bipyridyl Linkers, and Cul Ions

A multicomponent approach of the P-n ligand complex [Cp*Fe((5)-P-5)] (1: Cp* = (5)-C5Me5) with the ditopic organic linkers 4,4-bipyridine (2) or trans-1,2-di(pyridine-4-yl)ethene (3) in the presence of Cu-I salts of the anions [BF4](-) and [PF6](-) or the coordinating anion Br-, leads to the formation of four novel organometallic-organic hybrid polymers: the cationic 1D polymeric compounds [Cu-4{Cp*Fe(mu(3),(5:1:1)-P-5)}(2)(mu,(1:1)-C10H8N2)(4)(CH3CN)(4)](n)[BF4](4n) (4) and [Cu-4{Cp*Fe(mu(3),(5:1:1)-P-5)}(2)(mu,(1:1)-C10H8N2)(4)(CH3CN)(4)](n)[PF6](4n) (5) as well as the unique neutral threefold 2D 2D interpenetrated networks [Cu2Cl2{Cp*Fe(mu(3),(5:1:1)-P-5)}(mu,(1:1)-C12H10N2)](n) (6) and [Cu2Br2{Cp*Fe(mu(3),(5:1:1)-P-5)}(mu,(1:1)-C10H8N2)](n) (7)