Diffusion coefficients in air at 298.2 °K and 1 atm pressure are reported for ethane, ethene, ethyne, cyclopropane, propene, propadiene, propyne, butane, 1-butene, 2-methylpropene, cis-2-butene, trans-2-butene, 1,3-butadiene, 1-butyne, 2-methylbutane, 2,2-dimethylpropane, cyclopentane, 1-pentene.A linear relationship, valid alkanes alkenes, has been found between the diffusion coefficient reduced molecular weight of members a homologous series air.Diffusion calculated by ten prediction...

The dianion of tetracyanoquinodimethane, TCNQ2−, is able to act as a ligand capable binding four metal ions at the corners rectangle. When combined with divalent in presence appropriate counterions, infinite anionic networks may be formed composition [M2TCNQ3]2− (M = Mn, Zn, Cd). In structures reported here cyano groups from six separate TCNQ dianions provide an octahedral coordination environment around centres. Large hexagonal channels network are occupied by highly disordered countercations.

New types of coordination polymers containing [M(TCNQ)] sheets in which the TCNQ component is present as little known dianion TCNQ2− are obtained a very simple manner using readily available TCNQH2 (i.e. 1,4-(NC)2CH·C6H4·CH(CN)2) starting material. Above and below metal centers sheets, range pyridine derivatives can be attached, some terminal acting pillars linking sheet to form 3D network. The following compounds, generally solvated form, were isolated structurally...

The new compound Cu2I(TCNQF4II–)(MeCN)2 (TCNQF42– = dianion of 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) has been synthesized by electrochemically directed synthesis involving reduction TCNQF4 to TCNQF42– in acetonitrile containing [Cu(MeCN)4]+(MeCN) and 0.1 M Bu4NPF6. In one scenario, is quantitatively formed reductive electrolysis followed addition [Cu(MeCN)4]+ form the coordination polymer. a second reduced situ at electrode surface TCNQF42–, reaction with present solution,...

7,7,8,8-Tetracyano-2,3,4,5-tetrafluoroquinodimethane (F4TCNQ) in its dianionic form, F4TCNQ2−, is shown to form charge transfer complexes with a wide variety of organic cations. The structures and spectroscopic properties fourteen F4TCNQ2− salts are described, thirteen which have colours consistent the formation complexes. Unlike neutral F4TCNQ complexes, dianion, able act as donor interaction suitable cations that serve acceptors solid-state described this work been categorised into five...

A series of compounds composition A[CuI(F4TCNQII–)] (A = a quaternary ammonium or phosphonium cation, F4TCNQII– the dianionic form 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane) have been synthesized and structurally characterized. In each structure, an anionic [CuI(F4TCNQII–)]− framework possessing topology PtS is formed with Cu(I) center serving as tetrahedral 4-connecting F4TCNQ2– anion acting planar unit. Although observed for six different compounds, shows significant geometric...

Abstract A family of magnetic metal–organic frameworks, (Ph 3 PMe) 2 [M (TCNQ) ] {M=Fe 2+ , Co Ni and Zn } have been prepared structurally characterized. The honeycomb‐like “layers” consist M II ions doubly bridged with dinitrilomethane moieties two 7,7,8,8‐tetracyanoquinodimethane dianions which are further connected through phenyl rings to form a 3D dianionic framework TCNQ 2− Ph PMe + cations filling cavities that run along the c axis. Studies coupling dianion in these structures revealed...

A new synthetic approach has led to the incorporation of TCNQ and F₄TCNQ dianions into a wide variety structures.

Coordination polymer strips of composition ...Cu+2·lig2–·Cu+2·lig2–·Cu+2·lig2–... (where lig2– = TCNQ2– or its 2,3,4,5-tetrafluoro analogue) are observed with a wide range coligands (monodentate, bidentate, and tridentate). Interdigitation "thin", planar N-heteroaromatic on one strip those neighbor is common structural feature. Coligands too bulky to allow interdigitation give either non-interdigitating 2D sheet structures. Both sheets have 2-connecting Cu centers 4-connecting tetracynano...

Coordination polymers containing tetracyanoquinodimethane (TCNQ) in its dianionic form, TCNQ–II, have been formed by combining the acid form of dianion, TCNQH2, with divalent metal centres presence chelating ligands such as 2,2′-bipyridine (bipy) and 1,10-phenanthroline (phen). When MnII or CdII is employed, two-dimensional (2D) corrugated sheet structures formula MII(TCNQ–II)L (M = Mn, Cd; L bipy, phen) are obtained. In contrast, when CoII used centre a complex three-dimensional (3D)...

Coordination frameworks containing DCNQI2– (DCNQI = N,N′-dicyanoquinonediimine ligand) are produced by deprotonation of DCNQIH2 in the presence a metal center and co-ligand. This approach has yielded two-dimensional (2D) sheet compounds [Cd(DCNQI)(L)2] (where L pyridine (py) or isoquinoline (isoquin)) that can be partially oxidized via solid-state electrochemical situ spectroelectrochemical methods to materials contain DCNQI as its radical monoanion. The new display charge-transfer bands...

Abstract The reaction of Mn(BF 4 ) 2 ⋅ x H O with (Pr N) TCNQF (TCNQF =2,3,5,6‐tetrafluoro‐7,7,8,8‐tetracyanoquinodimethane) in a mixture CH 3 OH/CH Cl gives 2:3 stoichiometric complex [Mn (CH OH) ] ( 1 ). If the solvent system used for crystallisation is changed to OH/DMF, then different product, [Mn(TCNQF )(DMF) ), obtained. use Li instead leads generation (DMF) DMF An unexpected mixed oxidation state network composition II Mn III 16 10 (OH) 6 (OCH 24 ](NO OH formed if Mn(NO place that...

A remarkably flexible, multifunctional, 2D coordination polymer exhibiting an unprecedented mode of reversible mechanical motion, enabling pores to open and close, is reported. Such multifunctional materials are highly sought after, owing the potential exploit coexisting electronic functionalities that underpin useful technological applications such as actuators ultrasensitive detectors. The polymer, composition Mn(F4TCNQ)(py)2 (F4TCNQ = 2,3,5,6-tetrafluoro-7,7,8,8-tetracycanoquinodimethane;...

Coxsackievirus B3 (CVB3) is a picornavirus that responsible for significant proportion of human myocarditis. However, no antiviral treatment currently available to treat this disease or indeed any picornaviral infections. Previously it was shown amiloride and its derivative 5-(N-ethyl-N-isopropyl)amiloride inhibit the in vitro enzymatic activity CVB3 RNA polymerase (3Dpol). Here we measure compare inhibitory ten analogues against 3Dpol. We show replacement 3,5-diaminopyrazinyl moiety causes...