KMn(CN)6(N(CH3)4)2 crystallizes in the tetragonal I4/m space group. The structure consists of four tetramethylammonium molecules inside a KMn(CN)6 framework. In the KMn(CN)6 framework, K(1) is bonded in an octahedral geometry to two equivalent N(1) and four N(2,2) atoms. Mn(1) is bonded in an octahedral geometry to two equivalent C(1) and four C(2,2) atoms. There are four inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one Mn(1) and one N(1) atom. In the second C site, C(2) is bonded in a linear geometry to one Mn(1) and one N(2) atom. In the third C site, C(2) is bonded in a linear geometry to one Mn(1) and one N(2) atom. In the fourth C site, C(2) is bonded in a linear geometry to one Mn(1) and one N(2) atom. There are three inequivalent N sites. In the first N site, N(1) is bonded in a single-bond geometry to one K(1) and one C(1) atom. In the second N site, N(2) is bonded in a single-bond geometry to one K(1) and one C(2) atom. In the third N site, N(2) is bonded in a single-bond geometry to one K(1) and one C(2) atom.
KMn(CN)6(N(CH3)4)2 crystallizes in the tetragonal I4/m space group. The structure consists of four tetramethylammonium molecules inside a KMn(CN)6 framework. In the KMn(CN)6 framework, K(1) is bonded in an octahedral geometry to two equivalent N(1) and four N(2,2) atoms. Both K(1)-N(1) bond lengths are 3.05 Å. All K(1)-N(2,2) bond lengths are 3.22 Å. Mn(1) is bonded in an octahedral geometry to two equivalent C(1) and four C(2,2) atoms. Both Mn(1)-C(1) bond lengths are 1.98 Å. All Mn(1)-C(2,2) bond lengths are 2.00 Å. There are four inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one Mn(1) and one N(1) atom. The C(1)-N(1) bond length is 1.18 Å. In the second C site, C(2) is bonded in a linear geometry to one Mn(1) and one N(2) atom. The C(2)-N(2) bond length is 1.18 Å. In the third C site, C(2) is bonded in a linear geometry to one Mn(1) and one N(2) atom. The C(2)-N(2) bond length is 1.18 Å. In the fourth C site, C(2) is bonded in a linear geometry to one Mn(1) and one N(2) atom. The C(2)-Mn(1) bond length is 2.00 Å. The C(2)-N(2) bond length is 1.18 Å. There are three inequivalent N sites. In the first N site, N(1) is bonded in a single-bond geometry to one K(1) and one C(1) atom. In the second N site, N(2) is bonded in a single-bond geometry to one K(1) and one C(2) atom. In the third N site, N(2) is bonded in a single-bond geometry to one K(1) and one C(2) atom. The N(2)-C(2) bond length is 1.18 Å.