The efficient synthesis has been described to achieve a new class of ladder π-conjugated molecules, B,N-bridged p-terphenyls. bridging B atom exhibits more significant effect than the N on photophysical properties.

The unprecedented ten-vertex Zintl anion with the two vertices occupied by transition metal fragments, [Ge8(Mo(CO)3)2]4−, has been synthesized and structurally characterized, representing first example of 20-electron empty clusters. less cluster-bonding electrons result in a markedly distorted bicapped square antiprismatic structure featuring up-expanded down-compressed squares.

Computational studies indicate that some benzophenone-capped cyclophanes should have carbonyl groups pointed directly at their basal benzene rings as a result of conformational restraints imposed by bulky in the linking arms molecules. Cyclophane 4 was prepared, and its X-ray structure shows it to be first in-ketocyclophane.

The linear triatomic [ZnBi2]4− found in the diamagnetic K4ZnBi2 was prepared as first discrete Zn–Bi Zintl cluster anion neat solid state from unique K–Zn–Bi system. tetraanionic trimer has sixteen valence electrons isovalent with CO2, accounting for its nearly structure (Zn–Bi–Zn, 177.3(3)°) and multiple ZnBi bonds revealed by unprecedentedly short bond length (2.553(3) Å) DFT π-bonding analyses, on basis of established 16-electron counting rule a species. VASP theoretical calculations...

Four charge-transfer complexes of <italic>C</italic>_3h-BTT (<bold>2</bold>) with the organic acceptors TCNQ, F₄TCNQ, chloranil, and fluoranil were prepared crystallographically characterized.

The first aromatic all-metal heterocycle, [ZnBi4](3-), found in the metallic salt, K6ZnBi5, has been synthesized and structurally characterized. exactly planar [ZnBi4](3-) pentagon with six π electrons coupled multiply bonded Zn-Bi Bi-Bi bonds, multicentered π-conjugated bonding, negative nucleus-independent chemical shift values reveals its character. nature of K6ZnBi5 established by Pauli-type temperature-independent paramagnetism theoretical analysis band structure total/partial density states.

In this study, three fascinating resorcin[4]arene‐based Cu(I) complexes, named [CuCl (TPC4R)] ( 1 ), [CuBr 2 and [Cu I 3 ) were prepared by using a pyrimidine‐functionalized resorcin[4]arene ligand (TPC4R). , two ions linked TPC4R Cl − (or Br anions to form binuclear units. The adjacent units extended into supramolecular layers through H bonds. connected one mononuclear complex. hydrogen bonds produce chain. Significantly, exhibit high efficiency universality for azide‐alkyne cycloaddition...

The novel ternary Zintl phase K11Cd2Sb5 (1) with the unusual butterfly-shaped [Cd2Sb5](11-) (1a) cluster anion has been prepared by employing an enhanced stoichiometric proportion of K atoms that act as scissors. 1a is composed two corner-shared unprecedented planar CdSb3 triangles represent first tricoordinated example Cd unexpected for octet rule.

This paper investigates the dynamical behaviour of Liu system with time delayed feedback. Two typical situations are considered and effect time-delay parameter on dynamics is discussed. It shown that feedback may exhibit interesting extremely rich behaviour. The evolution to be complex varying parameter. Moreover, strange attractor like 'wormhole' detected via numerical simulations.

Oxidation of benzo[1,2‐ b :3,4‐ ′:5,6‐ ′′]trithiophene ( 1 ) with MCPBA at room temperature gives the corresponding monosulfone 3 . This material readily undergoes a Diels–Alder dimerization extrusion SO 2 to form dihydroheterohelicene 5 This, in turn, is easily converted into heterohelicene 6 one‐pot NBS bromination and elimination. In similar manner, oxidation phenanthro[9,10‐ ]thiophene 12 13 , bromination/elimination forms 8 The X‐ray structures compounds are reported, as well...

Benzo[1,2- c :3,4- ′:5,6- ′′]trithiophene ( D 3 h -BTT) is an easily prepared electron donor that readily forms charge–transfer complexes with organic acceptors. We report here two crystal structures of its 7,7,8,8-tetracyanoquinodimethane (TCNQ) and buckminsterfullerene (C 60 ). The -BTT·TCNQ complex, C 12 H 6 S ·C 4 N , crystallizes mixed layers donors acceptors, estimated degree charge transfer at 0.09 e . In the -BTT·C ·toluene 7 8 central ring BTT `squeezed' by molecules from both...

Electron cloud interactions with high-energy beams are believed,. responsible, for various undesirable effects ranging from vacuum degradation to collective beam instabilities. An important source of uncertainty in predicting electron a given machine lies understanding detail the processes relating generation cloud. The Advanced Photon Source (APS) has taken lead role development techniques and interpretation direct measurements distribution. Through such data, good progress been made...

Abstract The new Zintl phase of title is synthesized from stoichiometric mixtures the elements (Nb containers, 700 °C, 48 h) and characterized by powder XRD, magnetic measurements, projector augmented wave band structure computations.

Abstract [K(18‐crown‐6)] 3 K [Ge 8 (Mo(CO) ) 2 ]·en is synthesized from an en solution of a binary alloy nominal composition 4 Ge 9 (obtained by heating mixtures and at 900 °C for d in sealed Nb containers), 18‐crown‐6, Mo(CO) 6 (60 °C, h, 30% yield).

Two new sulfur- and selenium-rich pentacyclic aromatic compounds were prepared by short chemical syntheses. The two donors readily formed charge transfer (CT) complexes upon reaction with antimony pentachloride or tris(4-bromophenyl)ammoniumyl hexachloroantimonate. X-ray structures of the heterocyclic their CT determined. flattened considerably complex formation.