PREPARATION, STRUCTURE AND OPTICAL-PROPERTIES OF [CH3SC(=NH2)NH2](3)PBI5, [CH3SC(=NH2)NH2](4)PB2BR8 AND H3SC(=NH2)NH2](3)PBCL5-CENTER-DOT-CH3SC(=NH2)NH2CL
Ga. Mousdis et al., PREPARATION, STRUCTURE AND OPTICAL-PROPERTIES OF [CH3SC(=NH2)NH2](3)PBI5, [CH3SC(=NH2)NH2](4)PB2BR8 AND H3SC(=NH2)NH2](3)PBCL5-CENTER-DOT-CH3SC(=NH2)NH2CL, Journal of materials chemistry (Print), 8(10), 1998, pp. 2259-2262
The preparation, crystal structures and optical absorption spectra of
[CH3SC (= NH2)NH2](3)PbI5 1, [CH3SC (=NH2)NH2](4)Pb2Br8 2 and [CH3SC(=
NH2)NH2](3)PbCl5. CH3SC (=NH2)NH2Cl 3 are reported. Compounds 1 and 3
consist of deformed PbX6, octahedra, which share opposite corners to f
orm quasi-zero-dimensional or one-dimensional infinite chains along th
e a-axis. Compound 2 consists of Pb2Br9 units which-are connected with
two neighbouring units by non-opposite Br atoms; in this way, infinit
e zigzag chains are formed. A blue shift of the excitonic absorption b
ands, in comparison to those of systems with higher dimensionality, is
observed.