Supplementary Material (ESI) for Dalton Transactions This journal is © The Royal Society of Chemistry 2010 52 Optimesed X-ray structure RU1 11.826 6.473 4.770 NI1 8.588 7.285 4.821 CL1 10.732 6.697 2.482 CL2 12.878 6.255 6.958 S1 9.612 5.420 5.723 S2 6.793 5.892 3.974 S3 7.666 9.328 3.895 S4 10.379 8.478 5.662 O1 13.101 3.896 3.974 O2 14.146 8.128 3.888 C1 8.955 4.143 4.504 C2 7.431 4.099 4.454 C3 6.953 3.076 3.421 C4 6.786 3.831 5.816 C5 7.084 6.036 2.077 C6 6.195 7.096 1.500 C7 4.954 6.707 0.976 C8 4.074 7.631 0.424 C9 4.428 8.980 0.386 C10 5.655 9.381 0.905 C11 6.551 8.461 1.465 C12 7.849 8.979 2.010 C13 9.076 10.625 4.324 C14 8.640 11.210 5.669 C15 9.131 11.718 3.255 C16 10.399 9.870 4.394 C17 12.624 4.894 4.276 C18 13.264 7.478 4.224 H1 9.338 3.173 4.844 H2 9.377 4.359 3.520 H3 5.871 3.137 3.268 H4 7.459 3.184 2.458 H5 7.180 2.071 3.795 H6 7.148 2.868 6.195 H7 7.047 4.595 6.552 H8 5.696 3.780 5.728 H9 8.150 6.209 1.930 H10 6.818 5.062 1.669 H11 4.680 5.655 1.004 H12 3.119 7.301 0.023 H13 3.753 9.715 -0.044 H14 5.931 10.433 0.877 H15 8.089 9.941 1.559 H16 8.696 8.303 1.890 H17 7.704 11.767 5.568 H18 8.513 10.438 6.432 H19 9.416 11.900 6.023 H20 8.149 12.174 3.095 H21 9.812 12.507 3.597 H22 9.517 11.353 2.299 H23 10.664 9.446 3.423 H24 11.196 10.555 4.707