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Ba2Cl2F is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Ba2Cl2F cluster. Ba is bonded in a linear geometry to one Cl and one F atom. The Ba–Cl bond length is 2.72 Å. The Ba–F bond length is 2.50 Å. Cl is bonded in a single-bond geometry to one Ba atom. F is bonded in a linear geometry to two equivalent Ba atoms.
Ba2HCl2 is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Ba2HCl2 cluster. Ba is bonded in a linear geometry to one H and one Cl atom. The Ba–H bond length is 2.53 Å. The Ba–Cl bond length is 2.71 Å. H is bonded in a linear geometry to two equivalent Ba atoms. Cl is bonded in a single-bond geometry to one Ba atom.
Eu2Br2F is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Eu2Br2F cluster. Eu is bonded in a linear geometry to one Br and one F atom. The Eu–Br bond length is 2.70 Å. The Eu–F bond length is 2.32 Å. Br is bonded in a single-bond geometry to one Eu atom. F is bonded in a linear geometry to two equivalent Eu atoms.
Yb2Br2F is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Yb2Br2F cluster. Yb is bonded in a linear geometry to one Br and one F atom. The Yb–Br bond length is 2.58 Å. The Yb–F bond length is 2.13 Å. Br is bonded in a single-bond geometry to one Yb atom. F is bonded in a linear geometry to two equivalent Yb atoms.
MnH30(CN)6(Se)4 is alpha Niobium phosphide structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four MnH30(CN)6 clusters and four Se clusters. In each MnH30(CN)6 cluster, Mn2+ is bonded to six N3- atoms to form MnN6 octahedra that share corners with six CH3N tetrahedra. There are a spread of Mn–N bond distances ranging from 2.31–2.36 Å. There are three inequivalent C1- sites. In the first C1- site, C1- is bonded to one N3- and three H1+ atoms to form CH3N tetrahedra that share a cornercorner with one MnN6 octahedra. The corner-sharing octahedral tilt angles are 60°. The C–N bond length is 1.48 Å. All C–H bond lengths are 1.10 Å. In the second C1- site, C1- is bonded to one N3- and three H1+ atoms to form CH3N tetrahedra that share a cornercorner with one MnN6 octahedra. The corner-sharing octahedral tilt angles are 59°. The C–N bond length is 1.48 Å. All C–H bond lengths are 1.10 Å. In the third C1- site, C1- is bonded to one N3- and three H1+ atoms to form CH3N tetrahedra that share a cornercorner with one MnN6 octahedra. The corner-sharing octahedral tilt angles are 58°. The C–N bond length is 1.48 Å. All C–H bond lengths are 1.10 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a 4-coordinate geometry to one Mn2+, one C1-, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the second N3- site, N3- is bonded in a 4-coordinate geometry to one Mn2+, one C1-, and two H1+ atoms. There is one shorter (1.03 Å) and one longer (1.04 Å) N–H bond length. In the third N3- site, N3- is bonded in a 4-coordinate geometry to one Mn2+, one C1-, and two H1+ atoms. There is one shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. There are fifteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the thirteenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fifteenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In each Se cluster, there are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a bent 120 degrees geometry to two Se2- atoms. There are one shorter (2.38 Å) and one longer (2.39 Å) Se–Se bond lengths. In the second Se2- site, Se2- is bonded in a single-bond geometry to one Se2- atom.
Sr2Cl2F is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Sr2Cl2F cluster. Sr is bonded in a linear geometry to one Cl and one F atom. The Sr–Cl bond length is 2.56 Å. The Sr–F bond length is 2.31 Å. Cl is bonded in a single-bond geometry to one Sr atom. F is bonded in a linear geometry to two equivalent Sr atoms.
Yb2OBr2 is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Yb2OBr2 cluster. Yb2+ is bonded in a linear geometry to one O2- and one Br1- atom. The Yb–O bond length is 2.06 Å. The Yb–Br bond length is 2.66 Å. O2- is bonded in a linear geometry to two equivalent Yb2+ atoms. Br1- is bonded in a single-bond geometry to one Yb2+ atom.
Xe2F3AsF6 is alpha iridium vanadium-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of twelve AsF6 clusters and twelve Xe2F3 clusters. In each AsF6 cluster, As is bonded in an octahedral geometry to six F atoms. There is one shorter (1.77 Å) and five longer (1.78 Å) As–F bond length. There are five inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one As atom. In the second F site, F is bonded in a single-bond geometry to one As atom. In the third F site, F is bonded in a single-bond geometry to one As atom. In the fourth F site, F is bonded in a single-bond geometry to one As atom. In the fifth F site, F is bonded in a single-bond geometry to one As atom. In four of the Xe2F3 clusters, Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.22 Å) Xe–F bond lengths. There are two inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Xe atom. In the second F site, F is bonded in a bent 150 degrees geometry to two equivalent Xe atoms. In eight of the Xe2F3 clusters, there are two inequivalent Xe sites. In the first Xe site, Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.21 Å) Xe–F bond lengths. In the second Xe site, Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.22 Å) Xe–F bond lengths. There are three inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Xe atom. In the second F site, F is bonded in a single-bond geometry to one Xe atom. In the third F site, F is bonded in a bent 150 degrees geometry to two Xe atoms.
Eu2Cl2F is alpha Niobium phosphide-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is zero-dimensional and consists of one Eu2Cl2F cluster. Eu is bonded in a linear geometry to one Cl and one F atom. The Eu–Cl bond length is 2.55 Å. The Eu–F bond length is 2.33 Å. Cl is bonded in a single-bond geometry to one Eu atom. F is bonded in a linear geometry to two equivalent Eu atoms.
Three metal deficient field stars were observed in the ultraviolet and optical spectral regions: HD 165195, HD 110281, and HD 232078. High dispersion spectra near H alpha, and low dispersion, long wavelength IUE spectra were obtained. The H alpha profiles have strong asymmetric emission with absorption cores that are frequently asymmetric. The surface flux of Mg II lines is similar to that of luminous Pop I stars in spite of the lower metal abundance. Semi-empirical atmospheric models suggest that the characteristic emission in the wings of the H alpha line can arise within static chromospheres. Radial expansion gives an asymmetric, blue-shifted H alpha core accompanied by greater emission in the red line wing than the blue wing. Wind models with extended atmospheres suggest mass loss rates - 2 billion M/yr. Thus H alpha provides no evidence that steady mass loss is substantial enough to significantly affect the evolution of stars on the red giant branch of globular clusters.
We have recently shown that the baryonic Tully-Fisher (BTF) and Faber-Jackson (BFJ) relations imply that the gravitational "constant" G in the force law vary with acceleration alpha as 1/alpha . Here we derive the converse from first principles. First we obtain the gravitational potential for all accelerations and we formulate the Lagrangian for the central-force problem. Then action minimization implies the BTF/BFJ relations in the deep MOND limit as well as weak-field Weyl gravity in the Newtonian limit. The results show how we can properly formulate a nonrelativistic conformal theory of modified dynamics that reduces to MOND in its low-acceleration limit and to Weyl gravity in the opposite limit. An unavoidable conclusion is that alpha-0 , the transitional acceleration in modified dynamics, does not have a cosmological origin and it may not even be constant among galaxies and galaxy clusters.
ICl3 is alpha Niobium phosphide-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one ICl3 cluster. I is bonded in a rectangular see-saw-like geometry to four Cl atoms. There are a spread of I–Cl bond distances ranging from 2.39–2.74 Å. There are three inequivalent Cl sites. In the first Cl site, Cl is bonded in a single-bond geometry to one I atom. In the second Cl site, Cl is bonded in an L-shaped geometry to two equivalent I atoms. In the third Cl site, Cl is bonded in a single-bond geometry to one I atom.
XeAsF7 is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four XeAsF7 clusters. Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.22 Å) Xe–F bond lengths. As is bonded in an octahedral geometry to six F atoms. There are a spread of As–F bond distances ranging from 1.74–1.97 Å. There are seven inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one As atom. In the second F site, F is bonded in a single-bond geometry to one Xe atom. In the third F site, F is bonded in a bent 120 degrees geometry to one Xe and one As atom. In the fourth F site, F is bonded in a single-bond geometry to one As atom. In the fifth F site, F is bonded in a single-bond geometry to one As atom. In the sixth F site, F is bonded in a single-bond geometry to one As atom. In the seventh F site, F is bonded in a single-bond geometry to one As atom.
Hf(BH4)4 is alpha Po structured and crystallizes in the cubic P-43m space group. The structure is zero-dimensional and consists of one Hf(BH4)4 cluster. Hf4+ is bonded to twelve equivalent H+0.50+ atoms to form HfH12 cuboctahedra that share faces with four equivalent BH4 tetrahedra. All Hf–H bond lengths are 2.13 Å. B3- is bonded to four H+0.50+ atoms to form BH4 tetrahedra that share a faceface with one HfH12 cuboctahedra. There is one shorter (1.19 Å) and three longer (1.25 Å) B–H bond length. There are two inequivalent H+0.50+ sites. In the first H+0.50+ site, H+0.50+ is bonded in a single-bond geometry to one B3- atom. In the second H+0.50+ site, H+0.50+ is bonded in a distorted single-bond geometry to one Hf4+ and one B3- atom.
ZrI4 is alpha Niobium phosphide-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one ZrI4 cluster. there are two inequivalent Zr4+ sites. In the first Zr4+ site, Zr4+ is bonded to six I1- atoms to form ZrI6 octahedra that share an edgeedge with one ZrI6 octahedra and an edgeedge with one ZrI5 trigonal bipyramid. There are a spread of Zr–I bond distances ranging from 2.73–3.08 Å. In the second Zr4+ site, Zr4+ is bonded to five I1- atoms to form edge-sharing ZrI5 trigonal bipyramids. There are a spread of Zr–I bond distances ranging from 2.71–3.07 Å. There are eight inequivalent I1- sites. In the first I1- site, I1- is bonded in a water-like geometry to two equivalent Zr4+ atoms. In the second I1- site, I1- is bonded in a water-like geometry to two Zr4+ atoms. In the third I1- site, I1- is bonded in a water-like geometry to two Zr4+ atoms. In the fourth I1- site, I1- is bonded in a single-bond geometry to one Zr4+ atom. In the fifth I1- site, I1- is bonded in a single-bond geometry to one Zr4+ atom. In the sixth I1- site, I1- is bonded in a single-bond geometry to one Zr4+ atom. In the seventh I1- site, I1- is bonded in a single-bond geometry to one Zr4+ atom. In the eighth I1- site, I1- is bonded in a single-bond geometry to one Zr4+ atom.
CPH3S3 is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of two CPH3S3 clusters. C2- is bonded in a trigonal non-coplanar geometry to three H1+ and one S2- atom. All C–H bond lengths are 1.10 Å. The C–S bond length is 1.81 Å. P5+ is bonded to four S2- atoms to form edge-sharing PS4 tetrahedra. There are a spread of P–S bond distances ranging from 1.93–2.15 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a single-bond geometry to one P5+ atom. In the second S2- site, S2- is bonded in a water-like geometry to one C2- and one P5+ atom. In the third S2- site, S2- is bonded in an L-shaped geometry to two equivalent P5+ atoms.
Tc(CO)5 is Cubic alpha N2-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of eight Tc(CO)5 clusters. Tc3- is bonded in a square pyramidal geometry to five C+2.60+ atoms. There are a spread of Tc–C bond distances ranging from 1.94–2.01 Å. There are five inequivalent C+2.60+ sites. In the first C+2.60+ site, C+2.60+ is bonded in a linear geometry to one Tc3- and one O2- atom. The C–O bond length is 1.16 Å. In the second C+2.60+ site, C+2.60+ is bonded in a linear geometry to one Tc3- and one O2- atom. The C–O bond length is 1.16 Å. In the third C+2.60+ site, C+2.60+ is bonded in a linear geometry to one Tc3- and one O2- atom. The C–O bond length is 1.16 Å. In the fourth C+2.60+ site, C+2.60+ is bonded in a linear geometry to one Tc3- and one O2- atom. The C–O bond length is 1.16 Å. In the fifth C+2.60+ site, C+2.60+ is bonded in a linear geometry to one Tc3- and one O2- atom. The C–O bond length is 1.16 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one C+2.60+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C+2.60+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one C+2.60+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one C+2.60+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one C+2.60+ atom.
H3OClO4 is alpha Np structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four water molecules and four HClO4 clusters. In each HClO4 cluster, H is bonded in a single-bond geometry to one O atom. The H–O bond length is 0.99 Å. There are three inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.43 Å. In the second O site, O is bonded in a distorted water-like geometry to one H and one Cl atom. The O–Cl bond length is 1.66 Å. In the third O site, O is bonded in a single-bond geometry to one Cl atom. The O–Cl bond length is 1.43 Å. Cl is bonded in a tetrahedral geometry to four O atoms.