Inorganic Chemistry

Inorganic Chemistry I. How many planes of symmetry does benzene have? Locate them in a drawing. II. Draw the ammonia molecule, find the symmetry elements, and list all symmetry operations. III. The rotations of ammonia form a subgroup of order 3. Write out the multiplication table. IV. Assign point groups to the following molecules and ions. P P P P P Cr Br Br Cl Cl Cl Cl Cr Br Br Cl Cl 4 - V. Assume cyclobutadiene is a square-planar molecule. Find the locations of all C2 axes and planes of symmetry consistent with the characters assigned below for the four carbon-carbon bonds. D4h E 2C4 C2 2C2' 2C2" i 2S4 sh 2 sv 2 sd GCC 4 0 0 0 2 0 0 4 0 2 VI. The complex Ru(PPh3)3(CO)2 (1) shows a single band in the C=O stretching region of the IR spectrum. On the other hand, the related complex Ru(PPh3)2(CO)2L (2) incorporates a different phosphine L and exhibits two relatively intense C=O stretching bands. If both complexes are effectively trigonal bipyramidal, deduce likely structures for each compound. Use group theoretical methods to support your answer. Compound ?(CO), cm-1 1 1905 2 1888, 1941 VII. Consider the three p orbitals px, py, and pz, which are degenerate for an isolated atom M. If M is surrounded by several X atoms, the latter impose an electrostatic field that can lift the degeneracy of the p orbitals. According to character tables, how do the p orbitals split in each of the following structures? a) MX3, pyramidal b) MX4, tetrahedral PLACE THIS ORDER OR A SIMILAR ORDER WITH US TODAY AND GET AN AMAZING DISCOUNT :)