A neutron diffraction study of the crystal structures and magnetic studies of (NH3CH2CH2CH2NH3)MnCl4 and (NH3CH2CH2NH3)FeCl4: Layer structures with two-dimensional magnetic interactions

Neutron diffraction study of twinned crystals of ethylenediammonium copper tetrachloride and ethylenediammonium manganese tetrachloride

“…1 and 3). Uncorrected values of C--N and C-C bonds are in a good agreement with bond lengths for NH3(CHz)3NH3MCI 4, M = Mn, Fe, reported by Willett & Riedel (1975). The bond lengths and angles summarized in Table 4 and dihedral angles between planes defined by different segments of the organic ion (in Table 5) have no unexpected values and indicate that there is no deformation of the ethylenediammonium ions due to their insertion between metal-tetrachloride sheets.…”

“…In NH3(CH2)3NH3MnC14, as reported by Willett & Riedel (1975), this angle is 167.7 (1) and we think therefore that the angle metal-Cl(1)-metal is not as good an indicator of the degree of puckering as the angle defined above.…”

“…Comparing these two structures with related roomtemperature structures (Steadman & Willett, 1970;Ferguson & Zaslow, 1971;Larsen, 1974;Peterson & Willett, 1972;Willett & Riedel, 1975;Walpen, 1976), we can draw the following conclusions" (a) The geometry of a metal-Cl 6 octahedron is determined predominantly by the nature of the metal atom and is only slightly affected (if at all) by hydrogen bonding.…”

“…(C2HsNH3)2CuC14 (Steadman & Willett, 1970), [(NH3C2H4)2NH2]-CI(CuC14) (Ferguson & Zaslow, 1971), (C6HsNH3) 2-CuC14 (Larsen, 1974), (CH3C2H4NH3)2MnC14 (Peterson & Willett, 1972;Depmeier, 1976), NH3(CH2) 3-NH3MnCI 4 (Willett & Riedel, 1975), and (CH3NH3) 2-MnCI 4 (Heger, Mullen & Knorr, 1976).…”

“…In an X-ray study Birrell & Zaslow (1972) presented the structure of EDACuCI 4 without positions of H atoms, Willett & Riedel (1975) published neutron diffraction results about propylenediammonium manganese and ferrous tetrachlorides NH3(CH2)3NH3MCI 4, M = Mn, Fe, and Walpen (1976) solved X-ray structures of the compounds NH3(CH2)nNH3CdCI 4 with n = 2-7. Some preliminary results on EDACuC14 and EDAMnC14 were published elsewhere (Arend, Tich~, Baberschke & Rys, 1976;Tich2~ & Bene~, 1975).…”