The vapor-phase germanium oxides GeO, Ge202, and GeaOa have been isolated in nitrogen and argon matrices. In a nitrogen matrix, infrared absorptions are observed at 973.4 (74Ge I6 0); 667.0, 599.0 (Ge 2 16 02); 824, and 440 em-I (Ge3 16 0a). A fourth species, Ge.O., is formed on diffusion, and gives infrared absorptions at 553.3, 490.0, 476.0, and 457.5 em-I. With the aid of 18 0 substitution, estimates are obtained for the molecular dimensions of these species: Ge202 (VA symmetry), rGe-O = 1.87 A, LOGeO=83°; GeaOa (DaA symmetry), RGe-o = 1 85 A, L OGeO = 100°. The concentration changes occurring on diffusion are investigated.

The matrix isolation of lead oxide vapors has led to the characterization by infrared spectroscopy of three prominent vapor species, PbO, Pb2O2, and Pb4O4. In a nitrogen matrix these molecules have absorption bands at 718.4 cm−1 (PbO), 557.4 and 467.7 cm−1 (Pb2O2), and 474.4 and 374.4 cm−1 (Pb4O4). With the aid of 18O substitution, it is shown that the spectra of Pb2O2 and Pb4O4 are consistent with molecular symmetries Vh and Td, respectively, and approximate molecular dimensions are obtained: Pb2O2, rPb – O=2.17 Å, 〈 OPbO=79° Pb4O4, rPb–O=2.27 Å, 〈 OPbO=81°. Several weaker features were also observed, and these are assigned to additional polymers.

The matrix isolation of vapor phase tin oxides leads to the identification of at least four distinct species: SnO, Sn202, SIl

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