6 H2Al_AlH2.mmp Al 0.000000 0.000000 -1.297000 Al 0.000000 0.000000 1.297000 H -1.351000 0.000000 -2.150000 H 1.351000 0.000000 -2.150000 H 0.000000 -1.351000 2.150000 H 0.000000 1.351000 2.150000