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The activities of the six-station IAA RAS correlator include regular processing of national geodetic VLBI programs Ru-E, Ru-U, and Ru-F. The Ru-U sessions have been transferred in e-VLBI mode and correlated in the IAA Correlator Center automatically since 2011. The DiFX software correlator is used at the IAA in some astrophysical experiments.
U2Ru crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of two U2Ru sheets oriented in the (1, 0, 0) direction. there are three inequivalent U sites. In the first U site, U is bonded in a distorted rectangular see-saw-like geometry to four U and four equivalent Ru atoms. There are a spread of U–U bond distances ranging from 3.09–3.18 Å. There are two shorter (2.73 Å) and two longer (2.75 Å) U–Ru bond lengths. In the second U site, U is bonded to eight U and four equivalent Ru atoms to form a mixture of distorted corner and face-sharing UU8Ru4 cuboctahedra. All U–U bond lengths are 2.73 Å. There are two shorter (3.21 Å) and two longer (3.31 Å) U–Ru bond lengths. In the third U site, U is bonded to eight U and four equivalent Ru atoms to form a mixture of distorted corner and face-sharing UU8Ru4 cuboctahedra. All U–Ru bond lengths are 3.27 Å. Ru is bonded in a distorted rectangular see-saw-like geometry to eight U atoms.