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MgY is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Mg is bonded in a body-centered cubic geometry to eight equivalent Y atoms. All Mg–Y bond lengths are 3.29 Å. Y is bonded in a body-centered cubic geometry to eight equivalent Mg atoms.
YMgNi4H4 crystallizes in the cubic F-43m space group. The structure is three-dimensional. Mg is bonded in a 12-coordinate geometry to four equivalent Y and twelve equivalent Ni atoms. All Mg–Y bond lengths are 3.21 Å. All Mg–Ni bond lengths are 3.06 Å. Y is bonded to four equivalent Mg and four equivalent H atoms to form corner-sharing YMg4H4 tetrahedra. All Y–H bond lengths are 2.06 Å. Ni is bonded in a 9-coordinate geometry to three equivalent Mg and three equivalent H atoms. All Ni–H bond lengths are 1.70 Å. H is bonded to one Y and three equivalent Ni atoms to form a mixture of edge and corner-sharing HYNi3 tetrahedra.
MgY is Zincblende, Sphalerite structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. Mg is bonded to four equivalent Y atoms to form corner-sharing MgY4 tetrahedra. All Mg–Y bond lengths are 3.07 Å. Y is bonded to four equivalent Mg atoms to form corner-sharing YMg4 tetrahedra.
MgY crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. Mg is bonded in a 10-coordinate geometry to four equivalent Mg and six equivalent Y atoms. All Mg–Mg bond lengths are 3.46 Å. There are a spread of Mg–Y bond distances ranging from 3.30–3.37 Å. Y is bonded to six equivalent Mg and six equivalent Y atoms to form a mixture of distorted edge, face, and corner-sharing YY6Mg6 cuboctahedra. There are four shorter (3.47 Å) and two longer (3.76 Å) Y–Y bond lengths.
MgY crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded in a 10-coordinate geometry to six Mg and four Y atoms. There are two shorter (3.32 Å) and four longer (3.38 Å) Mg–Mg bond lengths. There are two shorter (3.26 Å) and two longer (3.32 Å) Mg–Y bond lengths. In the second Mg site, Mg is bonded in a 10-coordinate geometry to four Mg and six Y atoms. Both Mg–Mg bond lengths are 3.29 Å. There are four shorter (3.37 Å) and two longer (3.42 Å) Mg–Y bond lengths. In the third Mg site, Mg is bonded in a 10-coordinate geometry to six Mg and four Y atoms. There are two shorter (3.34 Å) and two longer (3.46 Å) Mg–Y bond lengths. There are three inequivalent Y sites. In the first Y site, Y is bonded to six Mg and six Y atoms to form distorted YY6Mg6 cuboctahedra that share corners with twelve YY6Mg6 cuboctahedra, edges with three equivalent YY8Mg4 cuboctahedra, and faces with twelve YY6Mg6 cuboctahedra. There are a spread of Y–Y bond distances ranging from 3.44–3.61 Å. In the second Y site, Y is bonded to four Mg and eight Y atoms to form a mixture of distorted edge, face, and corner-sharing YY8Mg4 cuboctahedra. There are four shorter (3.42 Å) and two longer (3.61 Å) Y–Y bond lengths. In the third Y site, Y is bonded to four Mg and eight Y atoms to form YY8Mg4 cuboctahedra that share corners with six equivalent YY8Mg4 cuboctahedra, edges with four equivalent YY8Mg4 cuboctahedra, and faces with fourteen YY6Mg6 cuboctahedra. Both Y–Y bond lengths are 3.61 Å.
MgY is beta-derived structured and crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Mg is bonded to nine equivalent Mg and three equivalent Y atoms to form MgY3Mg9 cuboctahedra that share corners with six equivalent MgY3Mg9 cuboctahedra, corners with twelve equivalent YY9Mg3 cuboctahedra, edges with six equivalent YY9Mg3 cuboctahedra, edges with twelve equivalent MgY3Mg9 cuboctahedra, faces with eight equivalent YY9Mg3 cuboctahedra, and faces with twelve equivalent MgY3Mg9 cuboctahedra. There are three shorter (3.31 Å) and six longer (3.42 Å) Mg–Mg bond lengths. All Mg–Y bond lengths are 3.46 Å. Y is bonded to three equivalent Mg and nine equivalent Y atoms to form YY9Mg3 cuboctahedra that share corners with six equivalent YY9Mg3 cuboctahedra, corners with twelve equivalent MgY3Mg9 cuboctahedra, edges with six equivalent MgY3Mg9 cuboctahedra, edges with twelve equivalent YY9Mg3 cuboctahedra, faces with eight equivalent MgY3Mg9 cuboctahedra, and faces with twelve equivalent YY9Mg3 cuboctahedra. There are six shorter (3.42 Å) and three longer (3.51 Å) Y–Y bond lengths.
MgY crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Y atoms. There are a spread of Mg–Mg bond distances ranging from 3.37–3.53 Å. There are a spread of Mg–Y bond distances ranging from 3.24–3.43 Å. In the second Mg site, Mg is bonded in a 12-coordinate geometry to seven Mg and five Y atoms. There are two shorter (3.30 Å) and two longer (3.50 Å) Mg–Mg bond lengths. There are a spread of Mg–Y bond distances ranging from 3.33–3.37 Å. In the third Mg site, Mg is bonded to six Mg and six Y atoms to form distorted MgY6Mg6 cuboctahedra that share corners with six equivalent MgY6Mg6 cuboctahedra, corners with six equivalent YY7Mg5 cuboctahedra, edges with nine YY7Mg5 cuboctahedra, faces with two equivalent MgY6Mg6 cuboctahedra, and faces with twelve YY7Mg5 cuboctahedra. Both Mg–Mg bond lengths are 3.50 Å. There are a spread of Mg–Y bond distances ranging from 3.42–3.51 Å. There are three inequivalent Y sites. In the first Y site, Y is bonded to five Mg and seven Y atoms to form YY7Mg5 cuboctahedra that share corners with twelve YY7Mg5 cuboctahedra, edges with four equivalent MgY6Mg6 cuboctahedra, edges with five YY6Mg6 cuboctahedra, faces with four equivalent MgY6Mg6 cuboctahedra, and faces with ten YY7Mg5 cuboctahedra. There are a spread of Y–Y bond distances ranging from 3.47–3.53 Å. In the second Y site, Y is bonded to six Mg and six Y atoms to form distorted YY6Mg6 cuboctahedra that share corners with twelve YY7Mg5 cuboctahedra, edges with two equivalent MgY6Mg6 cuboctahedra, edges with nine YY7Mg5 cuboctahedra, faces with five equivalent MgY6Mg6 cuboctahedra, and faces with eight YY7Mg5 cuboctahedra. There are two shorter (3.44 Å) and two longer (3.50 Å) Y–Y bond lengths. In the third Y site, Y is bonded to five Mg and seven Y atoms to form YY7Mg5 cuboctahedra that share corners with six equivalent MgY6Mg6 cuboctahedra, corners with six equivalent YY7Mg5 cuboctahedra, edges with three equivalent MgY6Mg6 cuboctahedra, edges with eight YY7Mg5 cuboctahedra, faces with three equivalent MgY6Mg6 cuboctahedra, and faces with ten YY7Mg5 cuboctahedra. Both Y–Y bond lengths are 3.50 Å.
MgY crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Mg is bonded in a 11-coordinate geometry to four equivalent Mg and seven equivalent Y atoms. There are two shorter (3.35 Å) and two longer (3.46 Å) Mg–Mg bond lengths. There are a spread of Mg–Y bond distances ranging from 3.31–3.42 Å. Y is bonded to seven equivalent Mg and five equivalent Y atoms to form a mixture of distorted edge, face, and corner-sharing YY5Mg7 cuboctahedra. There are two shorter (3.46 Å) and three longer (3.53 Å) Y–Y bond lengths.
MgY is beta-derived structured and crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. there are two inequivalent Mg sites. In the first Mg site, Mg is bonded to nine Mg and three equivalent Y atoms to form MgY3Mg9 cuboctahedra that share corners with six equivalent YY12 cuboctahedra, corners with twelve equivalent MgY3Mg9 cuboctahedra, edges with six equivalent YY9Mg3 cuboctahedra, edges with twelve MgY3Mg9 cuboctahedra, faces with seven YY12 cuboctahedra, and faces with thirteen MgY3Mg9 cuboctahedra. There are three shorter (3.25 Å) and six longer (3.45 Å) Mg–Mg bond lengths. All Mg–Y bond lengths are 3.42 Å. In the second Mg site, Mg is bonded to twelve Mg atoms to form MgMg12 cuboctahedra that share corners with six equivalent MgMg12 cuboctahedra, corners with twelve equivalent YY9Mg3 cuboctahedra, edges with eighteen MgY3Mg9 cuboctahedra, faces with two equivalent YY9Mg3 cuboctahedra, and faces with eighteen MgY3Mg9 cuboctahedra. All Mg–Mg bond lengths are 3.45 Å. There are two inequivalent Y sites. In the first Y site, Y is bonded to twelve Y atoms to form YY12 cuboctahedra that share corners with six equivalent YY12 cuboctahedra, corners with twelve equivalent MgY3Mg9 cuboctahedra, edges with eighteen YY12 cuboctahedra, faces with two equivalent MgY3Mg9 cuboctahedra, and faces with eighteen YY12 cuboctahedra. There are six shorter (3.45 Å) and six longer (3.58 Å) Y–Y bond lengths. In the second Y site, Y is bonded to three equivalent Mg and nine Y atoms to form YY9Mg3 cuboctahedra that share corners with six equivalent MgMg12 cuboctahedra, corners with twelve equivalent YY9Mg3 cuboctahedra, edges with six equivalent MgY3Mg9 cuboctahedra, edges with twelve YY12 cuboctahedra, faces with seven MgY3Mg9 cuboctahedra, and faces with thirteen YY12 cuboctahedra. All Y–Y bond lengths are 3.45 Å.
MgY is Tetraauricupride structured and crystallizes in the orthorhombic Pmma space group. The structure is three-dimensional. Mg is bonded in a body-centered cubic geometry to eight equivalent Y atoms. There are a spread of Mg–Y bond distances ranging from 3.28–3.31 Å. Y is bonded in a body-centered cubic geometry to eight equivalent Mg atoms.
MgY crystallizes in the trigonal R-3m space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded to six equivalent Mg and six equivalent Y atoms to form MgY6Mg6 cuboctahedra that share corners with twelve MgY6Mg6 cuboctahedra, edges with twelve MgY6Mg6 cuboctahedra, edges with twelve equivalent YY6Mg6 cuboctahedra, faces with six equivalent MgY6Mg6 cuboctahedra, and faces with twelve equivalent YY6Mg6 cuboctahedra. All Mg–Mg bond lengths are 3.47 Å. All Mg–Y bond lengths are 3.42 Å. In the second Mg site, Mg is bonded to six equivalent Mg and six Y atoms to form MgY6Mg6 cuboctahedra that share corners with five equivalent YY10Mg6 cuboctahedra, corners with twelve MgY6Mg6 cuboctahedra, edges with ten YY6Mg6 cuboctahedra, edges with twelve MgY6Mg6 cuboctahedra, faces with six equivalent MgY6Mg6 cuboctahedra, and faces with fifteen YY6Mg6 cuboctahedra. All Mg–Mg bond lengths are 3.47 Å. All Mg–Y bond lengths are 3.42 Å. In the third Mg site, Mg is bonded to six equivalent Mg and six Y atoms to form MgY6Mg6 cuboctahedra that share corners with five equivalent YY10Mg6 cuboctahedra, corners with twelve MgY6Mg6 cuboctahedra, edges with ten YY6Mg6 cuboctahedra, edges with twelve MgY6Mg6 cuboctahedra, faces with six equivalent MgY6Mg6 cuboctahedra, and faces with fifteen YY6Mg6 cuboctahedra. All Mg–Mg bond lengths are 3.47 Å. All Mg–Y bond lengths are 3.42 Å. There are two inequivalent Y sites. In the first Y site, Y is bonded to six Mg and six equivalent Y atoms to form YY6Mg6 cuboctahedra that share corners with twelve YY6Mg6 cuboctahedra, edges with twelve MgY6Mg6 cuboctahedra, edges with twelve YY6Mg6 cuboctahedra, faces with six equivalent YY6Mg6 cuboctahedra, and faces with twelve MgY6Mg6 cuboctahedra. All Y–Y bond lengths are 3.47 Å. In the second Y site, Y is bonded to six Mg and ten equivalent Y atoms to form YY10Mg6 cuboctahedra that share corners with ten MgY6Mg6 cuboctahedra, corners with twelve YY6Mg6 cuboctahedra, edges with eight MgY6Mg6 cuboctahedra, edges with sixteen YY6Mg6 cuboctahedra, faces with sixteen equivalent YY10Mg6 cuboctahedra, and faces with eighteen MgY6Mg6 cuboctahedra. There are a spread of Y–Y bond distances ranging from 3.47–6.93 Å.
MgY is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Mg is bonded to six equivalent Y atoms to form a mixture of corner and edge-sharing MgY6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Mg–Y bond lengths are 3.12 Å. Y is bonded to six equivalent Mg atoms to form a mixture of corner and edge-sharing YMg6 octahedra. The corner-sharing octahedral tilt angles are 0°.
MgY is Bergman Structure: Mg32(Al,Zn)49 Bergman-derived structured and crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded in a 12-coordinate geometry to six Mg and six Y atoms. There are a spread of Mg–Mg bond distances ranging from 3.20–3.49 Å. There are a spread of Mg–Y bond distances ranging from 3.29–3.62 Å. In the second Mg site, Mg is bonded in a 11-coordinate geometry to two equivalent Mg and seven Y atoms. There are a spread of Mg–Y bond distances ranging from 3.27–3.43 Å. In the third Mg site, Mg is bonded in a 9-coordinate geometry to two equivalent Mg and seven Y atoms. There are a spread of Mg–Y bond distances ranging from 3.33–3.50 Å. There are three inequivalent Y sites. In the first Y site, Y is bonded in a 12-coordinate geometry to seven Mg and five Y atoms. There are a spread of Y–Y bond distances ranging from 3.49–3.63 Å. In the second Y site, Y is bonded in a 12-coordinate geometry to six Mg and six Y atoms. There are two shorter (3.49 Å) and two longer (3.51 Å) Y–Y bond lengths. In the third Y site, Y is bonded to seven Mg and five Y atoms to form a mixture of distorted corner and face-sharing YY5Mg7 cuboctahedra. Both Y–Y bond lengths are 3.49 Å.
MgY is beta-derived structured and crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded in a 12-coordinate geometry to five Mg and seven Y atoms. There are a spread of Mg–Mg bond distances ranging from 3.31–3.51 Å. There are a spread of Mg–Y bond distances ranging from 3.26–3.63 Å. In the second Mg site, Mg is bonded in a 12-coordinate geometry to five Mg and seven Y atoms. There are two shorter (3.37 Å) and two longer (3.51 Å) Mg–Mg bond lengths. There are a spread of Mg–Y bond distances ranging from 3.26–3.63 Å. In the third Mg site, Mg is bonded to four Mg and eight Y atoms to form distorted MgY8Mg4 cuboctahedra that share corners with eighteen YY5Mg7 cuboctahedra, edges with four equivalent YY4Mg8 cuboctahedra, edges with six equivalent MgY8Mg4 cuboctahedra, faces with two equivalent MgY8Mg4 cuboctahedra, and faces with ten YY4Mg8 cuboctahedra. There are a spread of Mg–Y bond distances ranging from 3.25–3.69 Å. There are four inequivalent Y sites. In the first Y site, Y is bonded to eight Mg and four Y atoms to form distorted YY4Mg8 cuboctahedra that share edges with four equivalent MgY8Mg4 cuboctahedra, edges with fourteen YY4Mg8 cuboctahedra, faces with four equivalent MgY8Mg4 cuboctahedra, and faces with ten YY4Mg8 cuboctahedra. All Y–Y bond lengths are 3.58 Å. In the second Y site, Y is bonded to seven Mg and five Y atoms to form distorted YY5Mg7 cuboctahedra that share corners with nine equivalent MgY8Mg4 cuboctahedra, corners with nine YY5Mg7 cuboctahedra, edges with ten YY4Mg8 cuboctahedra, faces with three equivalent MgY8Mg4 cuboctahedra, and faces with nine YY4Mg8 cuboctahedra. There are a spread of Y–Y bond distances ranging from 3.36–3.63 Å. In the third Y site, Y is bonded to seven Mg and five Y atoms to form distorted YY5Mg7 cuboctahedra that share corners with nine equivalent MgY8Mg4 cuboctahedra, corners with nine YY5Mg7 cuboctahedra, edges with ten YY4Mg8 cuboctahedra, faces with three equivalent MgY8Mg4 cuboctahedra, and faces with nine YY4Mg8 cuboctahedra. Both Y–Y bond lengths are 3.36 Å. In the fourth Y site, Y is bonded to seven Mg and five Y atoms to form distorted YY5Mg7 cuboctahedra that share corners with nine equivalent MgY8Mg4 cuboctahedra, corners with nine YY5Mg7 cuboctahedra, edges with ten YY4Mg8 cuboctahedra, faces with three equivalent MgY8Mg4 cuboctahedra, and faces with nine YY4Mg8 cuboctahedra. The Y–Y bond length is 3.63 Å.
MgY crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are three inequivalent Mg sites. In the first Mg site, Mg is bonded to four Mg and eight Y atoms to form distorted MgY8Mg4 cuboctahedra that share corners with six equivalent MgY8Mg4 cuboctahedra, corners with twelve YY4Mg8 cuboctahedra, edges with eight equivalent MgY8Mg4 cuboctahedra, edges with ten YY4Mg8 cuboctahedra, faces with eight YY4Mg8 cuboctahedra, and faces with twelve MgY8Mg4 cuboctahedra. There are two shorter (3.43 Å) and two longer (3.47 Å) Mg–Mg bond lengths. There are a spread of Mg–Y bond distances ranging from 3.27–3.39 Å. In the second Mg site, Mg is bonded to four Mg and eight Y atoms to form distorted MgY8Mg4 cuboctahedra that share corners with six equivalent YY4Mg8 cuboctahedra, corners with twelve MgY6Mg6 cuboctahedra, edges with seven YY6Mg6 cuboctahedra, edges with eleven MgY6Mg6 cuboctahedra, faces with eight MgY8Mg4 cuboctahedra, and faces with twelve YY4Mg8 cuboctahedra. There are two shorter (3.30 Å) and two longer (3.47 Å) Mg–Mg bond lengths. There are a spread of Mg–Y bond distances ranging from 3.40–3.60 Å. In the third Mg site, Mg is bonded to six Mg and six Y atoms to form distorted MgY6Mg6 cuboctahedra that share corners with six equivalent YY4Mg8 cuboctahedra, corners with twelve MgY6Mg6 cuboctahedra, edges with three equivalent MgY8Mg4 cuboctahedra, edges with fifteen YY4Mg8 cuboctahedra, faces with eight YY4Mg8 cuboctahedra, and faces with twelve MgY8Mg4 cuboctahedra. Both Mg–Mg bond lengths are 3.47 Å. There are two shorter (3.31 Å) and four longer (3.33 Å) Mg–Y bond lengths. There are three inequivalent Y sites. In the first Y site, Y is bonded to eight Mg and four Y atoms to form distorted YY4Mg8 cuboctahedra that share corners with six equivalent MgY8Mg4 cuboctahedra, corners with twelve YY4Mg8 cuboctahedra, edges with seven MgY6Mg6 cuboctahedra, edges with eleven YY6Mg6 cuboctahedra, faces with eight YY4Mg8 cuboctahedra, and faces with twelve MgY8Mg4 cuboctahedra. There are two shorter (3.47 Å) and two longer (3.54 Å) Y–Y bond lengths. In the second Y site, Y is bonded to six Mg and six Y atoms to form YY6Mg6 cuboctahedra that share corners with six equivalent MgY8Mg4 cuboctahedra, corners with twelve YY4Mg8 cuboctahedra, edges with three equivalent YY4Mg8 cuboctahedra, edges with fifteen MgY6Mg6 cuboctahedra, faces with eight MgY8Mg4 cuboctahedra, and faces with twelve YY4Mg8 cuboctahedra. There are two shorter (3.47 Å) and two longer (3.49 Å) Y–Y bond lengths. In the third Y site, Y is bonded to eight Mg and four Y atoms to form YY4Mg8 cuboctahedra that share corners with six equivalent YY4Mg8 cuboctahedra, corners with twelve MgY6Mg6 cuboctahedra, edges with eight equivalent YY4Mg8 cuboctahedra, edges with ten MgY6Mg6 cuboctahedra, faces with eight MgY8Mg4 cuboctahedra, and faces with twelve YY4Mg8 cuboctahedra. Both Y–Y bond lengths are 3.47 Å.
Young M-type binaries are particularly useful for precise isochronal dating by taking advantage of their extended pre-main sequence evolution. Orbital monitoring of these low-mass objects becomes essential in constraining their fundamental properties, as dynamical masses can be extracted from their Keplerian motion. Here, we present the combined efforts of the AstraLux Large Multiplicity Survey, together with a filler sub-programme from the SpHere INfrared Exoplanet (SHINE) project and previously unpublished data from the FastCam lucky imaging camera at the Nordical Optical Telescope (NOT) and the NaCo instrument at the Very Large Telescope (VLT). Building on previous work, we use archival and new astrometric data to constrain orbital parameters for 20 M-type binaries. We identify that eight of the binaries have strong Bayesian probabilities and belong to known young moving groups (YMGs). We provide a first attempt at constraining orbital parameters for 14 of the binaries in our sample, with the remaining six having previously fitted orbits for which we provide additional astrometric data and updated Gaia parallaxes. The substantial orbital information built up here for four of the binaries allows for direct comparison between individual dynamical masses and theoretical masses from stellar evolutionary model isochrones, with an additional three binary systems with tentative individual dynamical mass estimates likely to be improved in the near future. We attained an overall agreement between the dynamical masses and the theoretical masses from the isochrones based on the assumed YMG age of the respective binary pair. The two systems with the best orbital constrains for which we obtained individual dynamical masses, J0728 and J2317, display higher dynamical masses than predicted by evolutionary models.