Polyhedral monocarbaborane chemistry. Carboxylic acid derivatives of the [closo-2-CB9H10](-) anion

Reaction of B10H14 with para-(OHC)C6H4(COOH) in aqueous KOH gives the [nido-6-CB9H11-6-(C6H4-para-COOH)](-) anion I which upon cluster closure with iodine in alkali solution gives the [closo-2-CB9H9-2-(C6H4-para-COOH)](-) anion 2; an analogous procedure with B10H14 and glyoxalic acid OHCCOOH gives the [closo-2-CB9H9-2-(COOH)](-) anion 4 via the [arachno-6-CB9H13-6-(COOH)](-) anion 3

Propagation of sound from aircraft ground operations

Atmospheric absorption effects on sound propagation losses during aircraft ground operation

The propagation of sound from airport ground operations

Noise measurements of sound propagation related to jet aircraft takeoff

Macropolyhedral boron-containing cluster chemistry. Cluster assembly about a molybdenum centre. Formation of the 19-vertex [(CO)(2)MoB16H15C2Ph2](-) anion

Fusion of nine-vertex [1-Ph-nido-1-CB8H11] with [Mo(CH3CN)3(CO)3] in the presence of tetramethylnaphthalenediamine gives the nineteen-vertex macropolyhedral metallaborane anion [(CO)2MoB16H15C2Ph]− with a molybdenum(VI) twelve-atom coordination sphere

HARMONIC GENERATION *

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72100/1/j.1749-6632.1965.tb20242.x.pd