1. X-Ray structural and Raman data, including remarkable resonance Raman effects, for quadruple molybdenum-to-molybdenum bonds
2. 487. Molybdenum(II) carboxylates
3. Fluxional organometallic molecules
4. The following computer programs written for the IBM360 were used: TRACER, a lattice transformation and cell reduction program by Lawton; DATARED, a data reduction program by Frenz; FOURIER, a Fourier summation program (based on Zalkin's FORDAP) by Dellaca and Robinson and modified by Hodgson; NUCLS, a full-matrix least-squares program (minimizing Σw(|Fo|–|Fc|)2 by Ibers and Doedens, similar to Busing and Levy's ORFLS; SADIAN, a distances and angles program by Baur, rewritten by Frenz and Brice; AGNOST, an absorption correction program by Cahen based on Coppens' DATAP and Tompa analytical subroutines of Cullen's program; PERFACT, a program for analysis of structure factors by Frenz; ORFFE, a function and error program by Busing, Martin, and Levy as modified by Brown, Johnson, and Theissen; ORTEP, a plotting program by Johnson; and LIST, a program for listing the data by Snyder.