New Releases by Joel Martin

This paper surveys the situation existing prior to 1960 and does not consider changes that have occurred since the outbreak of the Lao civil war.

Papers from a symposium and catalogue of an exhibition of Inuit art (prints, sculpture, films) at Amherst College, Mass. in April 1988.

Annotated bibliography on the economic development of the Mekong Valley in the Lao PDR and Thailand.

Metal dialky1amides have been used to prepare complexes of the type [R[subscript 4]E] (6-x)[superscript ML][subscript 3] where R[subscript 4]E is a tetraalkylammoniuna or tetraphenylarsonium ion, L=benzene-1,2-dithiol, toluene-3 ,4-dithiol or o-mercaptophenol (for M=Ti, Zr, Hf, Nb, and Ta), L=1,2-dihydroxybenzene (for Ti and Hf), L=naphthalene- 1, 8 -dithiol (for Ti, Zr, and Hf), and x=4 (for Ti, Zr and Hf) or x=5 (for Nb and Ta), The complexes were prepared as Li or Na salts according to the general equation; M(NR[subscript 2])[subscript x] + (6 -x)NaHL + (x-3)H[subscript 2]L[superscript THF]--u003e NA[subscript (6-x)]ML[subscript 3] + xHNR[subscript 2].The alkali metal was then replaced by an organic cation in acetonitrile. Comparison of UV and visible spectra of the new complexes with previously isolated complexes shows that there is a shift of the lowest energy band to higher energy in the order: Ti