of the 0 2 2 -ligand being bonded to the boron center in a triangular bidentate (C,) manner,%* and the complex anion [B(02)F3]2-may be a pentacoordinated monomer; however, the possibility that the complex ion is tetrahedral with a terminal 0-0 group cannot be ruled out. The IR spectrum of the complex anion [B2(02)3F2]2-shows a pattern generally similar to that of the [B(O2)F3I2-species, except for much greater broadening of the band a t 1050 cm-'. It is believed that the stereochemistry of boron in the [B2(02),F212-ion is tetrahedral, which is attained through coordination of one 02-ligand in a triangular bidentate fashion, one terminal F ligand, and one end of a bridging 0-0 ligand. An alternate structure of the dimer, similar to that found for NaB03.4H20, with two 0-0 bridges connecting the two boron atoms (Le., a six-membered B204 ring), is also possible irrespective of the mode of coordination of the third peroxide group. In view of the structural study of the complex anion [B2(02)2(OH)4]2-, the latter structure appears more likely. The two extra bands at 3450 (m) and 1640 (m) cm-' in the case of the Na+ and K+ salts were assigned to the vWH and 6 H G H modes of uncoordinated water.9The broad nature of the vSH band in each case indicates a fair possibility of hydrogen bonding through F-H-F interactions. The bans at 1400 (s), 3045 (s), and 3155 (m) cm-' in the spectrum of (NH4)2B2 (02)3F2 have been attributed to the v4, vl, and v3 modes of NH4+. Thus, it is evident from the present work that, under the appropriate conditions, peroxyfluoroborates can be prepared and such complexes are appreciably stable. Acknowledgment. The authors are grateful to the Department of Atomic Energy for generous financial support (Grant No. 37/ 16/82G) and to the reviewers of the paper for valuable suggestions.Registry No. (NH4)2B2(02)3F2, 96455-71-9; Na2B(02)F3, 96455-72-0; K2B(Oz)F,, 96455-73-1. (9) Bhattacharjee, M. N.; Chaudhuri, M. K.; Dasgupta, H. S.; Khathing, D. T.While the chemistry of ruthenium(I1) is vast, many of its complexes fall within two main classifications-chemical complexes containing simple amines as well as 7-accepting heterocycles and molecules containing the wealth of soft ligands associated with organometallic chemistry. RuC13.3H20 ultimately serves as the source of ruthenium in the preparation of many of the compounds within both of these classes. Although the versatility of this starting material is a matter of record, it does suffer two important limitations: (1) a reduction is required in order to obtain Ru(I1) species; (2) the reaction must proceed in the presence of chloride ions. Hexaaquaruthenium(I1) salts may function as alternative starting points for systems where it is desired to avoid either or both of these conditions. The structure of this ion is known,' the lability of the aqua ligands has been studied,2 and a range of solvents is allowed depending upon the choice of anion. The utility of [ R~( H~O )~l ( t o s )~ (tos = ptoluenesulfonate) in the preparation (1) Bernhard, P.; Biirgi, H.-B.; H...
