Diethyl-2,2'-bipyridine-3,3'-dicarboxylate (3 or L) reacts with RuCl3 center dot 3H(2)O to give cis-(Cl)-[Ru(L)(2)Cl-2] center dot H2O (4) and structure of the complex was determined by spectral (IR, H-1-NMR), and mass spectroscopic data, elemental analyses and X-ray crystallography. The structure is solved in triclinic, space group p-1 with a = 10.658 (2), b = 12.446 (3), c = 14.186 (5) angstrom, alpha = 104.856 (3), beta = 108.704 (3), gamma = 94.973 (2)degrees, V = 1693.2 (8) angstrom(3), Z = 2 with final R = 0.012. The geometry of the complex is shown to be a distorted octahedral with four nitrogens of two 2,2'-bipyridyl ligands in two different planes with Ru-N distance as 2.021 (2)-2.071 (3) angstrom. The cis-position is occupied by two chloride atoms with Ru-Cl distance as 2.4156 (12) and 2.4167 (13) angstrom. The trans-axial Cl2-Ru1-N and Cl1-Ru1-N4 angles are respectively, 172.42 (7) and 174.12 (7)degrees. A weak hydrogen bonding is observed between the two chlorides and hydrogens of neighbouring molecule [C-H center dot center dot center dot Cl distance as 2.72, 2.77 (4) angstrom]. A second type of weak hydrogen bonding is also observed between the oxygens of carboxylate groups and hydrogens of a neighbouring molecule [C-H center dot center dot center dot O distance as 2.53, 2.56 and 2.34 (4) angstrom].