NETWORK HYDROGEN-BONDING IN 2 NEW COCRYSTALS SUSTAINED BY [MN(CO)(3)(MU(3)-OH)](4), A TETRAHEDRAL HYDROGEN-BOND DONOR

We report details of the synthesis and X-ray crystal structures of two new cocrystals that are sustained by the tetrahedral hydrogen bond do nor [Mn(CO)(3)(mu(3)-OH)](4) . [Mn(CO)(3)(mu(3)-OH)](4) . 2(2,3,5,6-te tramethylpyrazine). 2H(2)O . 2MeCN, a = 21.503(3), b = 12.674(1), c 17 .318(2), beta = 102.15(2), C 2/9, D-calc = 1.46 mg/m(3), Z = 4, 4188 o bserved reflns, R(f) = 0.047, R(w) = 0.040; 1. [Mn(CO)(3)(mu(3)-OH)](4 ) . 4,4'-dipyridyl . 2MeCN, a = 16.942(6), b = 12.395(2), c = 18.790(6 ), beta = 114.88(3), C 2/C, D-calc = 1.60 mg/m(3), Z = 4,2430 observed reflns, R(f) = 0.043, R(w) = 0.051; 2. 1 crystallizes as a 2-D grid, whereas 2 forms 1-D strands. The hydrogen bond patterns exhibited by 1 and 2 are analyzed in the context of our earlier studies involving[Mn (CO)(3)(mu(3)-OH)](4) and other relevant literature.