The manganese and cobalt complexes [M(dtbp)2]n (M=Mn, Co; dtbp=di-tert-butyl phosphate), which exist as one-dimensional molecular wires, transform to [M(dtbp)2(bpy)2.2H2O]n by the addition of 4,4-bipyridine (bpy) at room temperature; latter compounds form noninterpenetrating rectangular grid structures.

The manganese, cobalt, and cadmium complexes [M(dtbp)2]n (M = Mn (1) Co (2)) [Cd(dtbp)2(H2O)]n (3) (dtbp di-tert-butyl phosphate), which exist as one-dimensional molecular wires, transform to non-interpenetrating rectangular grids [M(dtbp)2(bpy)2·2H2O]n (4), (5), Cd (6)) by the addition of 4,4-bipyridine (bpy) at room temperature. Products 4−6 have also been prepared a room-temperature reaction or solvothermal synthesis in methanol through direct between metal acetate, phosphate,...

The reaction of di-tert-butyl phosphate (((t)BuO)(2)P(O)(OH), dtbp-H) with copper acetate in the presence pyridine (py) and 2,4,6-trimethylpyridine (collidine) has been investigated. Copper reacts dtbp-H a medium containing pyridine, DMSO, THF, CH(3)OH to yield one-dimensional polymeric complex [Cu(dtbp)(2)(py)(2)(mu-OH(2))](n) (1) as blue hollow crystalline tubes. atoms 1 are octahedral surrounded by two terminal ligands, molecules, bridging water molecules. mu-OH(2) ligands that present...

Molecular structure of [Cu(dtbp)2(phen)(OH2)] (dtbp-H = di-tert-butylphosphate, phen 1,10-phenanthroline), determined at 293, 203 and 93 K, provides useful snap-shots O–H bond activation a metal-bound water, which is aided by an intramolecular PO⋯H–O hydrogen bonding interaction.

Abstract Reactions of zinc acetate dihydrate with organic phosphates [(RO) 2 P(O)(OH)] (R = t Bu, Ph) and phosphinic acids [PhR′P(O)(OH)] (R′ Ph, H) have been investigated in the presence 1,10‐phenanthroline (phen). While use di‐ tert ‐butyl phosphate (dtbp‐H) results formation [Zn(phen) (dtbp)(OH )][dtbp](MeOH)(MeCOOH)(H O) 3 ( 1 ), change phosphorus source to diphenylphosphate (dpp‐H) yields an interesting phosphate‐bridged dinuclear complex [{Zn(phen)(dpp)} {μ ‐dpp} ] ). Mononuclear...

A microplasma jet has been constructed for chemical vapour deposition on the inner surface of narrow long tubes and is tested a quartz tube with diameter 6 mm outer 8 mm. plasma filament (>100 mm) generated inside in argon methane admixture. Depending quantity admixture argon, negative as well positive corona discharges are ignited. Both modes characterized using optical emission spectroscopy. For this purpose, nitrogen admixed its used determination gas temperature, electron velocity...

Uniform amorphous carbon film is deposited on the inner surface of quartz tube having diameter 6 mm and outer 8 mm. A pulsed filamentary plasma source used for deposition. Long filaments (~ 140 mm) as a positive discharge are generated inside in argon with methane admixture. FTIR-ATR, XRD, SEM, LSM XPS analyses give conclusion that composed non-hydrogenated sp2 hydrogenated sp3 carbon. Plasma characterized using optical emission spectroscopy, voltage-current measurement, microphotography...

An argon/nitrogen (0.999/0.001) filamentary pulsed discharge operated at atmospheric pressure in a quartz tube is characterized using voltage–current measurements, microphotography, optical emission spectroscopy (OES) and absorption spectroscopy. Nitrogen applied as sensor gas for the purpose of OES diagnostic. The density argon metastable atoms Ar(3P2) determined tunable diode laser (TDLAS). Using plasma chemical model measured data are characterization conditions. Between intense positive...

The use of a potentially tridentate mono-anionic bridging ligand, 1,3-bis(3,5-dimethylpyrazol-1-yl)propan-2-ol (bdmpp-H), in assembling new dimeric copper complexes with interesting magnetic properties has been investigated. reaction hydroxide or acetate phenyl phosphinic acid diphenyl the presence bdmpp-H produces dinuclear [Cu(bdmpp)(ppi)]2 (1) and [Cu(bdmpp)(dppi-H)]2(dppi)2 (2) (ppi-H = phenylphosphinic acid; dppi-H diphenylphosphinic acid), respectively. products have characterized help...

New Hf and Zr malonate complexes have been synthesized by the reaction of metal amides with different ligands (L = dimethyl (Hdmml), diethyl (Hdeml), di-tert-butyl (Hdbml) bis(trimethylsilyl) (Hbsml)). Homoleptic eight-coordinated monomeric compounds type ML4 were obtained for all employed. In contrast, only Hdmml Hdeml yielded ML4, while using bulky Hdbml Hbsml resulted into mixed alkoxo-malonato six-coordinated [ML2(OR)2]. Single crystal X-ray diffraction studies are presented discussed,...

Novel volatile compounds of hafnium, namely tetrakis-N,O-dialkylcarbamato hafnium(iv) [Hf((i)PrNC(O)O(i)Pr)(4)] () and tetrakis-N,N,N'-trialkylureato [Hf((i)PrNC(O)N-(Me)Et)(4)] (), have been synthesized through the simple insertion reaction isopropyl isocyanate into hafnium isopropoxide ethylmethylamide, respectively; based on promising thermal properties, compound has evaluated as a precursor for metalorganic chemical vapor deposition (MOCVD) HfO(2) thin films, which resulted in growth...

An ac discharge is ignited with the frequency of 170 kHz at tip a sharpened electrode in He–N2 gas mixture under atmospheric pressure. Plasma parameters (electron density and reduced electric field) are determined using phase-resolved optical emission spectroscopy. absolutely calibrated ICCD camera an appropriate filter used for time- space-resolved measurement N2(C–B,0–2) as well (B–X,0–0) emissions. From temporal spatial distributions these bands, plasma determined. Limits time space...

A filamentary discharge is ignited in an argon plasma jet under atmospheric pressure conditions. The gas characterized with voltage-current measurements, optical emission spectroscopy and ICCD-camera a high temporal resolution down to 10 ns. In the effluent of jet, filaments come into contact surface silicon wafer modify it, namely etching traces are produced microcrystals deposited. These studied electron microscopes. material deposited modifications analyzed Raman microspectroscopy....

Abstract A hard hydrocarbon film is deposited on the inner surface of glass tubes using a filamentary discharge at atmospheric pressure in Ar–C 2 H –H and Ar–CH 4 mixtures. Under similar conditions, soft with high deposition rate an mixture. These differences hardness are interpreted basis carbon hydrogen elemental composition plasma. The varied along axis This can be controlled by controlling substrate (tube) temperature. Chemical erosion atoms probable reason for this effect. plasma...

Organophosphonic diamides of general formula [R1P(O)(NHR2)2] (1–8; R1 = Ph, Cy or tBu and R2 Cy, iPr, Dipp) have been prepared by the addition P,P'-dichloro(alkyl/aryl)phosphine oxide, R1P(O)Cl2, to a solution primary amine in toluene. The synthesis PhP(O)(NHtBu)2 (1) high yield was achieved slow oxidation PhP(NHtBu)2 air over several days. All new compounds characterized elemental analysis IR, EI mass NMR (1H 31P) spectroscopy. molecular structures [PhP(O)(NHtBu)2] (1), [PhPO(NHDipp)2] (2)...

In this manuscript we show fascinating properties of plasmoids, which are known to be self-sustained plasma entities, and can exist without being in contact with any power supply. Plasmoids produced a filamentary discharge Ar/CH4 mixture high production rate about 105 s−1. It is observed that plasmoids etch the solid amorphous hydrocarbon film efficiency. Energy density plasmoid, estimated on basis glowing area photographic image sublimation enthalpy etched film, amounts 90 J m−3. This value...

Thin plasma filaments are produced by the propagation of ionization waves from a spiked driven electrode in quartz tube an argon/methane gas mixture (2400 sccm/2 sccm) at atmospheric pressure. The position touch point on substrate surface is controlled our experiment applying various suitable configurations and geometries grounded electrode. conditions varied argon to ambient air. Based microphotography discharge current waveforms, duration filament touching estimated be about one...

Plasmoids are produced in the argon filamentary discharge. By going through hydrocarbon gas, plasmoids collect carbon material. These produce diamond single micro-crystals upon contact on inner surface of cavity air atmosphere. When plasmoid?s point substrate is inert atmosphere, they deposit their material as micro-balls with a graphite core. The dimension and nature micro-materials deposited by analysed using scanning electron microscopy Raman microspectroscopy. compressive residual stress...