The crystal structure of [(CH, ),NH]FeC1, . 2HzO, FeTAC, has been determined and found to be isomorphous to that of the cobalt and nickel analogs, CoTAC and NiTAC. The structure consists of chains of bichloride-bridged Fe + ions extending along the b axis of the orthorhombic unit cell [space group Pnma, a=16.711(3) A, b=7.361(1) A, c=8.140(1) A, R=0.0488, R =0.0674]. These chains are linked into a two-dimensional (2D) network in the c direction by hydrogen bonding; the resulting planes are well isolated in the a direction by the organic molecules. The low-temperature magnetic susceptibilities are highly anisotropic with the greatest susceptibility along the b axis. Susceptibility data along b can be fit to the 1D Ising model with a small molecular-field correction giving a ferromagnetic intrachain exchange ( J& /k= 17.4 K). The molecular-field correction shows the total interchain exchange to be negative and small (z'J'/zJ = -2X 10 ), making FeTAC the most one-dimensional magnet of this series. Antiferromagnetic ordering is observed in both the susceptibility data and the Mossbauer spectra near 3.12 K. Analysis of both polycrystalline and single-crysta1 Mossbauer spectra show that V" is positive, corresponding to an orbital single ( 8) ground term based on the real d~orbital. This analysis also shows the easy axis of magnetization to lie in the ab plane. Low-field magnetization data show metamagnetic transitions when small fields are applied along the b axis. The metamagnetic phase diagram indicates the critical field is 90 Oe at T=O K. High-field magnetization data up to 15 T indicate the presence of spin canting. Extraction of interchain exchange constants consistent with all the experimental data has not been possible. One possible description finds z, J, /k = -0.04 K, with z, J, /k=0 K by symmetry, making FeTAC an example of a rectangular 2D Ising system in the ordered state.