Description: 987 organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system / 987 organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system/(30) phosphorus compounds (9/02; 9/06) (187) phosphorus directly bonded to n, i.e., p(n) (9/22; 9/22a) (194) contains the structure (n)-p-(x-c) wherein x is chalcogen atom, i.e., estramides (9/24) (201) c-(x)-p-(n)-c-q wherein q contains an atom other than c or h (9/24c; 9/24c1)
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