Search results
Results From The WOW.Com Content Network
Phosphonium ion Structure of PH + 4, the parent phosphonium cation. In chemistry, the term phosphonium (more obscurely: phosphinium) describes polyatomic cations with the chemical formula PR + 4 (where R is a hydrogen or an alkyl, aryl, organyl or halogen group). These cations have tetrahedral structures.
Tetraphenylphosphonium chloride is the chemical compound with the formula [(C 6 H 5) 4 P]Cl, abbreviated Ph 4 PCl or PPh 4 Cl or [PPh 4]Cl, where Ph stands for phenyl. Tetraphenylphosphonium and especially tetraphenylarsonium salts were formerly of interest in gravimetric analysis of perchlorate and related oxyanions.
There are over 6,000 NAPA Auto Parts stores in the United States, approximately 1500 of which are owned by Genuine Parts Company.The remainder are independently owned.
Most processes begin with phosphorous acid (aka phosphonic acid, H 3 PO 3), exploiting its reactive P−H bond. [1] [3]Phosphonic acid can be alkylated via the Kabachnik–Fields reaction or Pudovik reaction to give aminophosphonate, which are useful as chelating agents.
Massive Oscar statues stand at the entrance of the 2016 Academy Awards in Los Angeles. Despite being Hollywood's most prestigious award, an Oscar trophy is only worth $1.
Originally a division of Memphis-based wholesale grocer Malone & Hyde, the company was known as Auto Shack. After the sale of the grocery operation to the Fleming Companies of Oklahoma City, Oklahoma, the name of the company was changed to AutoZone to better reflect the company focus just prior to the company going public.
According to X-ray crystallography, [(i-Pr 2 N) 2 P] + is nearly planar consistent with sp 2-hybridized phosphorus center. [6] The planarity of the nitrogen center is consistent with the resonance of the lone pair of the nitrogen atom as a pi bond to the empty phosphorus 3p orbital perpendicular to the N−P−N plane.
Spanish fly isn’t just ineffective as an aphrodisiac — it’s also dangerous. So keep Spanish fly and other herbal aphrodisiacs at arm’s length. There’s just way too much at stake.