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A new compound with the FeAs-layers, namely (Sr_3Sc_2O_5)Fe_2As_2(abbreviated as FeAs-32522), was successfully fabricated. It has a layeredstructure with the space group of I4/mmm, and with the lattice constants a =4.069 $\AA$ and c = 26.876 $\AA$. The in-plane Fe ions construct a squarelattice which is close to that of other FeAs-based superconductors, such asREFeAsO (RE = rare earth elements) and (Ba,Sr)Fe_2As_2. However the interFeAs-layer spacing in the new compound is greatly enlarged. The temperaturedependence of resistivity exhibits a weak upturn in the low temperature region,but a metallic behavior was observed above about 60 K. The magneticsusceptibility shows also a non-monotonic behavior. Interestingly, thewell-known resistivity anomaly which was discovered in all other parentcompounds, such as REFeAsO, (Ba,Sr)Fe_2As_2 and (Sr,Ca,Eu)FeAsF and associatedwith the Spin-Density-Wave (SDW)/structural transition has not been found inthe new system either on the resistivity data or the magnetization data. Thiscould be induced by the large spacing distance between the FeAs-planes,therefore the antiferromagnetic correlation between the moments of Fe ions inneighboring FeAs-layers cannot be established. Alternatively it can also beattributed to the self-doping effect between Fe and Sc ions. The Hallcoefficient R_H is negative but strongly temperature dependent in widetemperature region, which indicates the dominance of electrical conduction byelectron-like charge carriers and probably a multi-band effect or a spinrelated scattering effect. It is found that the magnetoresistance cannot bedescribed by the Kohler's rule, which gives further support to above arguments.

(Sr_3Sc_2O_5)Fe_2As_2 as a possible parent compound for FeAs-based superconductors