Current state-of-the-art epitaxial growth techniques employ various metalorganic and hydride gases to deliver constituent species to the substrate surface, particularly high vapor pressure species such as phosphorus and sulfur. Gas source molecular beam epitaxy (GSMBE) utilizes hydride gas sources and solid elemental sources. The more conventional growth approach, molecular beam epitaxy (MBE), ...

The new compound Cs10P8Se20 features the heterotetracyclic [P3Se7] 3anion, a phosphorus-rich four-membered-ring species that possesses a P-P-P unit and formally P3þ and P4þ centers. It crystallizes in the orthorhombic space group Pnnm with a = 26.5456(7) Å, b = 8.0254(2) Å, c = 11.9031(4) Å, and Z = 2 at 100(2) K. The cyclic anion is cocrystallized with a [P2Se6] 4anion. Electronic absorption, ...

A compound stimulatory to the growth of Lactobacillus casei was isolated from cell extracts of Streptococcus lactis, purified, and characterized. The stimulant was identified as a small peptide with a molecular weight of approximately 4,500 daltons. The purified peptide gave negative tests for nucleic acids, phosphorus, glucosamine, and carbohydrates. Sixteen amino acids were detected in acid h...

Resolution of racemic tert-butyl-1-(2-methylnaphthyl)-phosphine oxide 1, a chiral phosphorus compound, was achieved using selectors developed from a small peptide library. Separation factors as high as 3.2 were observed. The library consists of 81 peptide-based potential chiral selectors on polymeric synthesis resins. The linker needed to immobilize the identified chiral selectors onto silica g...

The reaction of a terphenyl tin(ii) compound bearing an η(3) coordinating allyl ligand with adamantyl phosphaalkyne is reported. The quantitative stochiometric reaction towards one product involves an addition of one Sn-Ar bond across the C[triple bond, length as m-dash]P triple bond and formation of a phosphadistannacyclobutene ring. This kinetically favoured product can be isolated in the sol...

Organophosphorus chemistry has a crucial role in the field of drug research [1]. As generally well known, Adenosine Triphosphate (ATP) plays key energy processes all living cells mammals. There are also natural phosphorus containing organic compound, Phosphocitrate (PC), found mammalian mitochondria, likely produced by cytosolic phosphorylation citrate, and which important calcium metabolism, e...

2- Ethoxy-4(3H) quinazolinone 1 was synthesized and allowed to react with various halides, namely: alkyl, benzyl, allyl, acyl, haloacetyl, crotonyl, benzoyl, 2-furoyl and 1-naphthalenesulphonyl halides affording quinazoline and quinazolinone derivatives. The reactions of compound 1 with phosphorus oxychloride, phosphorus pentasulfide, ethyl chloroformate, ethyl chloroacetate, ?-bromoglucose tet...