6A Chemical Reviews, 1998, Vol. 98, No. 7
In Color on the Cover (Top) Ferrihydrite−goethite−gypsum neutralization sludge (reddish-yellow) at the Agnico-Eagle mine, Canada. See “Occurrence and Constitution of Natural and Synthetic Ferrihydrite, a Widespread Iron Oxyhydroxide”, by John L. Jambor and John E. Dutrizac, p 2549. (Lower left) Optimized geometry of the dyad formed by a donor (TTF) and an acceptor C60. The cyclic voltammogram shows characteristics from both the donor and acceptor. See “C60-Based Electroactive Organofullerenes”, by Nazario Martı´n, Luis Sa´nchez, Beatriz Illascas, and Ignacio Pe´rez, p 2527. (Lower Left) Space-filling models of a bisbinaphthyl crown ether molecule (S,S)-15, a trisbinaphthyl metal complex (S,S,S)-140, and a segment of binaphthyl polymer (R)-449. See “1,1′-Binaphthyl Dimers, Oligomers, and Polymers: Molecular Recognition, Asymmetric Catalysis, and New Materials”, by Lin Pu, p 2405.
To Appear in CHEMICAL REVIEWS, Vol. 98, No. 8, or in a later issue Transition Metal Complexes Containing Allenylidene, Cumulenylidene, and Related LigandssMichael I. Bruce, University of Adelaide. Transition Metal Boryl Compounds: Synthesis, Reactivity, and StructuresJeoffrey J. Irvine, M. J. Gerald Lesley, Todd B. Marder, Nicholas C. Norman, Craig R. Rice, Edward G. Robins, Warren R. Roper, George R. Whittell, and L. James Wright, University of Auckland, The University of Bristol, and The University of Durham. Hyaluronan: Preparation, Structure, Properties, and ApplicationssLubomi´r Lapcˇ´ik, Jr., Lubomi´r Lapcˇ´ik, Stefaan De Smedt, Joseph Demeester, and Peter Chabrecˇek, Technical University of Brno, University of Gent, and Ciba-Geigy, A.G. DNA Cross-Linking Agents as Antitumor DrugssScott R. Rajski and Robert M. Williams, Colorado State University.